Canine anxiety and puppy-rearing

Earlier this year I analysed some data collected by one of our Dachshund Breed Rescues. We wanted to see whether the massive increase in popularity of Miniature Smooth Dachshunds was feeding through into a rehoming and rescue problem. Unsurprisingly, the 2 are linked and this particular rescue charity has seen a 4-fold increase in rehoming cases from 2017 to 2019. Of those, 70% were not Kennel Club registered and that figure mirrors what we know about the market for pedigree dogs. Far more are bred outside the KC registration system than within it.

The analysis of the rescue data showed that a quarter of all cases were associated with biting or aggression. That is a worryingly high proportion, especially when compared with the findings of one of our breed surveys. In 2012, our survey asked about behaviour and temperament, and just 1% of Mini Smooths were reported as being aggressive with people (5% were aggressive with other dogs).

My suspicion is that many of these rehoming cases are a result of badly bred dogs producing puppies that are badly reared and then sold to inexperienced owners who know very little about canine behaviour and can’t cope.

Last month, I wrote about the breeding recommendations in a recently published paper “Throwing the baby out with the bathwater” (Dawson et al). Firstly, the authors recommended that breeding choices and puppy-rearing processes should be based on knowledge of good practices. Secondly, they advocated that all dogs should be independently tested for suitability before being bred from. In addition to suitability from a health point of view, they suggested behavioural testing is important to check their suitability to be good companion animals. Dogs that are themselves good companions, are more likely to produce puppies that will be good companions as well.

Fearfulness and its causes

I’ve been re-reading another paper on behaviour: “Early life experiences and exercise associated with canine anxieties” published by Hannes Lohi and Katriina Tiira in 2015. It’s an Open Access paper so you can download the full version, yourself. The study collected data from a Finnish family dog population to identify environmental factors that might be associated with canine fearfulness, noise sensitivity and separation anxiety. I was particularly interested in the findings on fearfulness, in light of the aggression/biting data found in the rescue Dachshunds. The paper notes that aggressiveness is often motivated by fear and that bite injuries from human-directed aggression are an important public health concern. In 2017/18 there were just under 8000 NHS hospital admissions for dog bites and this figure has risen by almost 5% since 2015. However, a 2017 paper (Westgarth et al) suggests that the real burden of dog bites is considerably larger than those estimated from hospital records.

While fearfulness is known to have relatively high heritability, 2 major environmental factors are also known to affect this: lack of juvenile experiences and aversive learning. In the Lohi/Tiira paper, they found that a puppy’s maternal care and the amount of socialisation had the largest effects on fearfulness. Fearful dogs had received poorer maternal care and were less well socialised compared with less fearful dogs. Additionally, fearful dogs also lived in households with fewer other dogs and with more human adults. Bitches and younger dogs also tended to be more fearful. There was also a tendency for fearful dogs to get less exercise and they were more likely to live indoors, rather than spending their time indoors and outdoors.

It’s fireworks season

In our area, the firework season seems to have spread well beyond Bonfire Night and there will inevitably be another week of loud noises as we approach the New Year. Noise sensitivity was the second issue investigated by Lohi and Tiira. They found that dogs with noise sensitivity got significantly less daily exercise than dogs with no noise sensitivity. They were also more likely to have been neutered and were likely to be their owner’s first dog. The more dogs an owner had and the more dogs they had previously owned, the later the age of onset of noise sensitivity in their current dog. Overall, the evidence suggests that more socialised dogs were less likely to be noise sensitive.

I (don’t) want to be alone

Among social media discussion groups, there seem to be endless questions about Dachshunds with separation anxiety. It’s not just Dachshunds, of course. According to Dogs Trust, surveys have shown that between 13% and 18% of owners reported separation-related issues with their dogs. One study (albeit a small sample) found 85% of the sample had behavioural and psychological signs of stress when left alone.

The Lohi/Tiira study found that separation anxiety was more common in dogs that received less exercise. Other studies (Sargisson 2014) have shown that dogs tend to develop separation-related behaviour if they are male, sourced from rescues or puppy farms, and are separated from their littermates before 8 weeks. Protective factors include ensuring a wide range of experiences outside the home with other people from 5-10 months old, stable daily routines and the avoidance of punishments. 

No surprises!

It probably comes as no surprise that the largest explanatory factors associated with fearfulness were maternal care and the amount of early socialisation (up to 3 months old). However, it is important to note that comments on maternal care in the Lohi/Tiira paper were made by the owners, not the breeders. This reflects their recollection of what they had seen when they visited the breeder before taking the puppy home. The importance of the “See Mum” message cannot be overstated and, in practice, buyers should aim to see the puppies interacting with their mother at least once before the day they take their puppy home. It’s also worth reading the Puppy Plan (Kennel Club and Dogs Trust www.thepuppyplan.com) as a week-by-week checklist of experiences that well-reared puppies should have been exposed to. 

The findings on exercise also come as no surprise to me. Our dogs love to sniff when they are out, off the lead. This is an important aspect of their mental stimulation as well as them getting physical exercise. So many of the cases of separation anxiety and destructive behaviour that I read on social media are, I’m convinced, due to the dogs simply not getting enough exercise. The authors note that exercise may work as stress resilience, particularly as the resilient effect of exercise on anxiety and depression has been recognised in people. It is known that exercise increases serotonin production in animals and people, and this acts as an antidepressant. Interestingly, the study also found that dogs with less daily exercise were more aggressive to other dogs. The amount of daily exercise may be an indicator of the overall quality of dog management. 

In conclusion, I think buyers need to be much more aware of how their potential puppy has been socialised. They also need to be much clearer on their responsibilities for socialisation and exercise. Breeders probably need to exaggerate when explaining the amount of exercise a dog will need. Otherwise, we will continue to see dogs suffering from anxiety in their new homes and growing demand for rescue and rehoming services.

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Dog theft in the UK – new research published

An Open Access paper has just been published which discusses dog theft trends in the UK. Statistics from Direct Line Insurance also show the most frequently stolen breeds and the regional hotspots for theft.

Dog theft by breed

Dogs are considered property under UK law, while current discourses of pet ownership place canine companions as part of an extended family. This means sentences for those who steal dogs are not reflective of a dogs’ sentience and agency, rather reflecting the same charges for those who steal a laptop or wallet. This is particularly problematic as dog theft is currently on the rise in England and Wales and led to public calls to change the law.

The paper shows the statistics of reported dog thefts from 2015 to 2017 and highlights the reduction in the proportion of cases where someone was charged by the Police.

Dog theft stats

According to the paper, there were police force inconsistencies in recording dog theft crime which meant some data was unusable or could not be accessed or analysed. The researchers say there is a need for a qualitative study to understand dog theft crime in different areas, and a standardised approach to recording the theft of a dog by all forces across England and Wales.

Allen, D.; Peacock, A.; Arathoon, J. Spatialities of Dog Theft: A Critical Perspective. Preprints2019, 2019030255 (doi: 10.20944/preprints201903.0255.v1). 

How long will my dog live? – cautionary comments by Dr Brenda Bonnett

I am grateful to Dr Brenda Bonnett for the following comments on my blog post “How long will my dog live?“. Brenda is an epidemiologist and CEO of the International Partnership for Dogs.

Thanks for an informative overview of this paper.  As an epidemiologist, however, I think a few cautions should be added.  Owner-reported mortality frequently lists ‘old-age’ as a cause of death, whereas this is essentially never listed by veterinarians or clinical data.  To me, what that designation means is that the dog achieved an age that approximated the owner’s expectation, and of course that would vary across breeds and owners.  Where breeds have a lower median age at death, owners might be more likely to pursue veterinary care, thereby resulting in a diagnosis.  This could confuse a comparison across breeds.  Not to discount the information, but just to suggest a little caution in its interpretation. 

A more important caution is in the use of proportional mortality.  As this value does not account for the actual rate of death or the base population, using it to compare across breeds is very risky. Let me give you one example from Swedish insurance statistics on deaths before 10 years of age in a population of millions of dog-years-at-risk, and reflecting almost 40% of all dogs in Sweden.  Bernese Mountain Dogs, Flat-coated Retrievers and Golden retrievers all had as their #1 cause of death Lymphosarcoma (a type of cancer).  So, if one had looked at proportional mortality, that was the highest cause.  On that basis, on might be tempted to say that these breeds were similar for this cause of death.  However, when one looks at the rates of death, and compares them as relative risk, the picture is very different as seen in the graphic below.  Essentially, very few Goldens died before 10 years of age, but among those who did, lymposarcoma was the most likely cause. It is fairly obvious that the importance of cancer as a cause of death before 10 years of age is very different for these breeds.  So – proportional mortality can be useful within a breed, but it is very dangerous to use it to compare across breeds.

Again – not to detract from the useful information in the paper, just to caution us all on how we apply it.

Longevity study – how long will my dog live?

How long will my dog live?

It seems a long time ago, but in 2014 the KC ran its pedigree dogs breed health survey with an online survey that attracted just under 50,000 responses. Among these were 5663 reports of dogs that had died. Now, that set of mortality data has been analysed and published in an Open Access paper: “Longevity and mortality in Kennel Club registered dog breeds in the UK in 2014”. The co-authors are Tom Lewis, Bonnie Wiles, Aimee Llewellyn-Zaidi, Katy Evans and Dan O’Neill; names that will be familiar to many readers.

There are some interesting findings in the paper and I’d like to share a few of those, this month.

The most commonly reported causes of death were old age (13.8%), unspecified cancer (8.7%) and heart failure (4.9%); with 5.1% of deaths reported as unknown cause. Overall median age at death was 10.33 years. Breeds varied widely in median longevity overall from the West Highland Terrier (12.71 years) to the Dobermann Pinscher (7.67 years). There was also wide variation in the prevalence of some common causes of death among breeds, and in median longevity across the causes of death.

What do dogs die of?

All dogs are going to die of something (!) so it’s perhaps good news to find that owners reported “old age” as the most common cause of death. Interestingly, “old age” as reported by the owners ranged from just under 6 years old to just over 22 years old. The median age of death under the “old age”category was 13.7 years.

At the recent Breed Health Coordinator Symposium, Dr Mike Starkey told us that 1 in 4 dogs will be affected by cancer so it’s probably not surprising to see Cancer (of unspecified types) as the second highest cause of death. The median age of cancer deaths was just over 10 years, again suggesting it is as most people would expect, a condition of older age. The range for age of death due to cancers was very wide: 2 months to 21 years.

What do different breeds die of?

It’s well-known that canine longevity varies considerably depending on the size of the breed; giant breeds have shorter lifespans while smaller breeds tend to live longer. Of particular interest to me was a previous VetCompass study that showed Miniature Dachshunds to be among the longest-lived breeds. This breed was subsequently chosen to be a long-lived representative in a genome-wide association study that Cathryn Mellersh (AHT) and other colleagues conducted to compare the genomes of long and short-lived breeds.

The latest paper shows data for “Within Breed Proportional Mortality” (WBPM). This is a way to look at the relative differences between the various causes of death for each breed where there were sufficient reports. (Unfortunately, from my personal point of view there were too few Dachshund reports to be included in this analysis).

This is where the paper gets really interesting. The data shows, for example that the WBPM for “old age” ranged from 3.85% in Bernese Mountain Dogs to 25.0% in Bearded Collies. In other words, significantly fewer BMDs die of old age than Bearded Collies. The WBPM for ‘cancer – unspecified’ ranged from 0.00% in Gordon Setters to 19.56% in Flat Coated Retrievers. The WBPM for ‘heart failure’ ranged from 0.00% in Whippets to 19.82% in Cavalier King Charles Spaniels. Again, these reflect what most people know about cancer risk in FCRs and heart disease in Cavaliers. The analysis also shows that Border Terriers had the highest WBPM for dying as a result of road traffic accidents.

This WBPM data enabled the authors to identify how individual breeds’ causes of death compared with the Overall Proportional Mortality (OPM) based on reports for all the dogs in the survey. Boxers and FCRs were the 2 breeds less likely to die of old age compared with the OPM. Cavaliers were less likely to die of cancers, compared with the OPM, but, as you would expect, were more likely to die of heart conditions. If your breed is among the 25 analysed in this way, it’s well worth looking at the data to see how it compares with your own experience.

Healthspan vs. Lifespan

Healthspan is an interesting concept that has become quite topical. A dog’s healthspan is the length of time it is healthy, not just alive. The paper says “Although death may be postponed by improved healthcare, extended longevity by itself does not necessarily imply an improved or even a good quality of life, so a delicate balancing act exists between longevity and acceptable quality of life.” This leads to challenging ethical debates about whether a shorter but healthy lifespan with a short, rapid decline to death, might be preferable to a longer life with long periods of illness and a slow decline to death. There is, inevitably, a difficult decision to be made by owners, with vets, about treatment options to prolong life, quality of life and when might be the right time to consider euthanasia.

The concept of healthspan means that longevity almost certainly means different things in different breeds. A giant breed would, typically, be expected to die younger than a toy breed but as long as the dog was healthy during that lifespan, most people would not consider there to be welfare issues. Conversely, long-lived breeds should not necessarily be considered as being “healthier”, particularly if much of their lifespan is subject to a debilitating illness.

4 categories of breed

The authors merged the results of longevity by breed with Within Breed Proportional Mortality (WBPM) and came up with 4 categories of breed:

  1. Long-lived with no specific cause of death at a raised proportional mortality (e.g. WHW Terrier, Bearded Collie, Gordon Setter)
  2. Long-lived with at least one cause of death at a raised proportional mortality (e.g. Labrador, Golden Retriever, Border Collie)
  3. Short-lived with no specific cause of death at a raised proportional mortality (e.g. GSD, Whippet)
  4. Short-lived with at least one cause of death at a raised proportional mortality (e.g. Flat Coated Retriever, Dobermann)Category 4 breeds are short-lived with serious, breed-specific, life-limiting conditions. Categories 1 and 3 are breeds where there is a wide variation in longevity associated with factors that apply across all dogs (such as size) and there is no obvious disease that accounts for death.

The paper concludes: “This study has identified individual breeds that have both a low median lifespan and also a high proportional mortality for one or more specific causes of death. Breeds with this combination are highlighted with potential welfare concerns that may need to be addressed.”

If your breed is one of the 25 breeds with causes of death with more than 50 reports, the paper is well worth reading and reflecting on what actions your breed clubs might need to be taking.


Please also read the comments by Dr Brenda Bonnett on this paper.

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A review of breeding policies at 15 national Kennel Clubs

This month saw the publication of a paper in the Veterinary Journal titled “Breeding policies and management of pedigree dogs in 15 national kennel clubs”. The authors include Dr Tom Lewis from our Kennel Club.

The authors investigated approaches being adopted by Kennel Clubs internationally and what they see as high priority issues. They issued a questionnaire to 40 KCs and received responses from 15, 11 in Europe and 4 elsewhere (Australia, Mexico, Uruguay, and the USA). The European responses were from Austria, Belgium, Denmark, France, Germany, Ireland, Latvia, The Netherlands, Norway, Sweden and the UK. Also among the authors were Sofia Malm and Gregoire Leroy who I met at the IPFD’s 3rd International Dog Health Workshop last year. They were facilitating the workstream on Breeding Strategies and Gregoire blogs regularly on the IPFD website (dogwellnet.com).

We know in the UK that our KC believes it registers around 35% of pedigree dogs which leaves a large number of breeders and dogs that fall outside its direct influence. I suspect that, historically, the KC and most breed clubs have taken the view that they can only influence dog owners among the registered population. Given the high percentage of unregistered dogs, the question therefore arises: who is looking after their interests? Certainly, in the Dachshunds, with our Pet Advisors among our Health Committee and Breed Clubs who are proactive on Dachshund Facebook Groups, we have taken the view that we need to help ALL Dachshund owners and potential owners. The dogs don’t know or care whether they are KC registered and if we can provide advice to all owners, that has to be a good thing.

The survey results from the 15 countries showed a range from less than 1% to 78% of dogs registered by their KC. The Nordic countries, in general, had a higher proportion of their pedigree dogs registered by their KCs but it’s worth remembering that the total dog population sizes in these countries are relatively small compared with say the UK and USA. The lowest proportions registered were in India, Nicaragua, the Dominican Republic and Hong Kong. The highest were in Finland, Sweden, Iceland and New Zealand. Our KC reported a figure of 35%.

One size does not fit all

When I wrote about the discussions at last year’s IDHW, I specifically commented on the international and cultural aspects that can significantly influence the choice of approach that will work for a Breed Health Strategy and the likely compliance from breeders and owners. This latest paper reinforces those comments. It is clear that what might work in the Nordic countries with smaller pedigree dog populations and a high compliance among breeders, is almost certainly not going to work in the UK, USA or Australia. That’s not to say we can’t learn from each other but a simple “cut and paste” solution that assumes “one size fits all” is doomed to fail. Each Kennel Club and each Breed Club needs to understand not only their specific challenges and priorities but also the context within which they are operating.

The paper goes on to discuss the different issues each of the KCs prioritised. It should be no surprise that exaggerated morphological features and inherited disorders ranked as the most important issues. It has been obvious for at least the past decade that these issues are significant and are not going to go away. The evidence that some breeds need serious action is overwhelming and anyone still calling for more data is, in my view, simply in denial. In the UK, we have seen the formation of the Brachycephalic Working Group whose report and action plan was published last year. To me, this seems like a model for collaboration and practical steps that the diverse range of interested parties (stakeholders!) can sign up to.Our KC ranked issues in the following order (most important, first): exaggerated morphological features, inbreeding and genetic variability, inherited disorders, puppy farming, legislative constraints to breeding, dog behaviour and economic constraints to breeding.

Health and breeding recommendations

Individual Kennel Clubs’ responses to these issues are also discussed and we can see how widely adopted different approaches are and the proportion of breeds these cover. “Health recommendations prior to breeding were provided for more than half of the breeds in 11 countries, health status for breeding was required in 10 countries, and the maximum numbers of litters or/and puppies produced by a single dog were restricted in seven countries. Three countries indicated they do not have any specific restrictions on choosing mating partners, while another three countries reported that specific restrictions on choosing mating partners were implemented for all breeds.” Only 1 of the responding KCs said they have no health recommendations in place prior to breeding. It’s not possible to tell from the paper or its supplementary data which countries place restrictions on choosing mating partners or the limits on puppies produced by a single dog (so-called Popular Sires). Similarly, we don’t know how compliant breeders are where these rules exist or their impact on dog health or genetic diversity.

Austria, Sweden and The Netherlands have breeding strategies covering all of their breeds. Five countries reported that they provide Coefficient of Inbreeding information online for 100% of their breeds (presumably that includes our KC via MateSelect). Three countries provide online advice mating tools for all of their breeds. The paper says that our KC provides EBV data on Hip and Elbow Dysplasia for 28 breeds (Sweden does this for 42 breeds). What’s interesting here is that there is a wealth of expertise available around the world and there should be many lessons learnt that can be applied to help KCs catch up, where they need to. I’m sure some of those lessons learnt would relate to the design and implementation of software solutions, as we often read about how easy or difficult it can be to navigate and find health or pedigree information in different countries. Applying those lessons learnt won’t necessarily be easy, particularly when KCs have legacy IT systems that really weren’t designed to meet the needs of today’s breeders or to cope with the newly emerging data and breeding tools.

Learning from each other

One of the other analyses was the pairing of countries with similar question response profiles. Our KC was most similar to the Danish KC and, perhaps surprisingly, France and the USA were paired. Uruguay/Mexico were also paired, as were Austria/Germany. There is potential for cooperation between these pairs of countries because of their similar responses. However, they might actually find equally useful insights by looking at countries with whom they have little similarity. Apparently, the French KC has already benefited from learning about our Mate Select system to develop their online database.

My main takeaways from this paper are (a) that the issues facing Kennel Clubs and breeders of pedigree dogs around the world have a lot in common and (b) that, by taking an international perspective, there is huge potential for more joined-up solutions to be developed. Solutions will necessarily cover access to and sharing of information on pedigrees, health conditions and test/screening programmes. In terms of creating real change and breed health improvement, I think the key will be the development of Breed-specific Improvement Strategies (Breed Health & Conservation Plans in the UK). Sharing these documents internationally could prove to be a critical success factor in accelerating the rate of improvement in dog health, particularly if we are able to learn what works and what doesn’t in different countries and cultures. Readers will not be surprised, therefore, to see me conclude that I believe the International Partnership for Dogs has a major role to play over the next decade.