Cookie use on MRCVSonline
We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive all cookies.
If you would like to forward this story on to a friend, simply fill in the form below and click send.

Your friend's email:
Your email:
Your name:
Send Cancel

Study reveals what makes dogs so friendly
By analysing behavioural and genetic data from dogs and wolves, the team confirmed a strong genetic aspect to human-directed social behaviour.
Researchers identify genetic component that shapes personality

US scientists have identified genetic changes that are linked to how dogs behave towards humans.

The study, published in Sciences Advances, suggests there is a common underlying genetic basis for hypersocial behaviour in dogs and humans.

The research was conducted by an interdisciplinary team of researchers, funded by Princeton University's department of ecology and evolutionary biology.

In the study, the team sequenced a region of chromosome six in dogs and found multiple sections of DNA that were linked to differences in social behaviour.

In the majority of cases, unique genetic insertions called transposons on the William-Beuron Syndrome Critical Region (WBSCR) were strongly connected to a tendency to seek out humans for physical contact and information.

In humans, is the deletion of these genes that causes Williams-Beuron syndrome - a rare disorder characterised by hyper-social traits.

“It was the remarkable similarity between the behavioural presentation of Williams-Beuron syndrome and the friendliness of domesticated dogs that suggested to us that there may be similarities in the genetic architecture of the two phenotypes,” said the study’s lead co-author, Bridgett vonHoldt.

The first suggestion of a link between
Williams-Beuron syndrome and dogs came in 2010 when vonHoldt and her team identified the canine analogue of the WBSCR.

Building on this work, the team collected and analysed behavioural data for 18 domesticated dogs and 10 captive human-socialised wolves, in addition to the biological samples used to sequence their genomes.

In line with their hypothesis, they confirmed that the domesticated dogs displayed more human-directed behaviour and spent more time in proximity to humans than the wolves. They also found that some of these transposons on the WBSCR were only found in domestic dogs, and not in wolves at all.

“We haven't found a social gene, but rather an important [genetic] component that shapes animal personality and assisted the process of domestication a wild wolf into a tame dog,” said vonHoldt.

Anna Kukekova, assistant professor in the department of animal sciences at the University of Illinois, who is familiar with the research but had no role in it, added: “The research provides evidence that there exist certain evolutionary conservative mechanism that contributes to sociability across species.

“That they have found this region contributes to sociability in dogs is exciting.”

Become a member or log in to add this story to your CPD history

Vets save premature penguin chick

News Story 1
 Vets have saved a tiny Humboldt penguin chick after her egg was accidentally broken by her parents. Keepers at ZSL London Zoo were shocked to find the chick, named Rainbow, still alive and rushed her straight to the Zoo’s on-site veterinary clinic.

It was a little way to go until the chick should have hatched, so the process was touch and go. Vets removed bits of shell from around the chick with tweezers until she could be lifted out and placed in a makeshift nest.

Rainbow is now in a custom-built incubation room where she spends her days cuddled up to a toy penguin. Keepers will hand-fed Rainbow for the next 10 weeks until she is healthy enough to move to the penguin nursery.  

Click here for more...
News Shorts
BVA infographic to help shoppers understand farm assurance schemes

An infographic to help members of the public understand farm assurance schemes has been produced by the BVA. The infographic outlines BVA’s priorities for animal welfare and shows whether or not the schemes address these priorities in their standards.

BVA president John Fishwick said: “The infographic is not intended to be a league table but to allow people to understand what aspects of animal health and welfare are addressed by assurance schemes so that they can decide which scheme best aligns with their own individual preferences and priorities."