Your data on MRCVSonline
The nature of the services provided by Vision Media means that we might obtain certain information about you.
Please read our Data Protection and Privacy Policy for details.

In addition, (with your consent) some parts of our website may store a 'cookie' in your browser for the purposes of
functionality or performance monitoring.
Click here to manage your settings.
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

Cat coat colour linked to aggression, study suggests
Cats with tortoiseshell and calico coats tend to be more aggressive towards their owners.
Torties and calicos found to be the most challenging
 
Cats with tortoiseshell and calico coats tend to be more aggressive towards their owners than cats with other coat colours, a recent study suggests.

The findings, published in the Journal of Applied Animal Welfare Research, back up the long-held belief that such cats are often the most challenging.

Led by Dr. Elizabeth Stelow from the UC Davis Veterinary Medical Teaching Hospital, the study was based on an online survey of over 1,200 cat owners.

The survey did not reveal the focus of the study and simply asked cat owners question's about their feline's behaviours. Participants were asked to select a colour category and written description that best fit their pet.

The researchers found that torties and calicos are more likely to scratch, bite and hiss during interactions with people.

Perhaps more surprisingly, the survey also revealed that cats with white and black, and white and gray coats are slightly more likely to engage in those behaviours.

The study is thought to be the first of its kind to look at the relationship between coat colour and behaviour. Commenting on the findings, Dr. Elizabeth Stelow believes that there is scope for further investigation.

Speaking to US news website Sacramento Bee, she said:  "We thought the findings were very interesting and we would love other researchers to take the baton and run with it, to look at the genetics of why this may be happening."  

Tortishells and calicos are reputed for being more temperamental than cats of other colours. Torties are a mix of brown, black, amber and red while calicos are mostly white with patches of black and orange.

Because two X chromosomes are necessary to produce their colouring, the majority of both types of cats are female. 

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

FIVP launches CMA remedies survey

News Story 1
 FIVP has shared a survey, inviting those working in independent practice to share their views on the CMA's proposed remedies.

The Impact Assessment will help inform the group's response to the CMA, as it prepares to submit further evidence to the Inquiry Group. FIVP will also be attending a hearing in November.

Data will be anonymised and used solely for FIVP's response to the CMA. The survey will close on Friday, 31 October 2025. 

Click here for more...
News Shorts
CMA to host webinar exploring provisional decisions

The Competition and Markets Authority (CMA) is to host a webinar for veterinary professionals to explain the details of its provisional decisions, released on 15 October 2025.

The webinar will take place on Wednesday, 29 October 2025 from 1.00pm to 2.00pm.

Officials will discuss the changes which those in practice may need to make if the provisional remedies go ahead. They will also share what happens next with the investigation.

The CMA will be answering questions from the main parties of the investigation, as well as other questions submitted ahead of the webinar.

Attendees can register here before Wednesday, 29 October at 11am. Questions must be submitted before 10am on 27 October.

A recording of the webinar will be accessible after the event.