Cats' whiskers reveal felines favor free lunch

Date:
September 30, 2021
Source:
University of Exeter
Summary:
Domestic cats that regularly catch wild animals still get most of
their nutrition from food provided at home, new research shows.



FULL STORY ========================================================================== Domestic cats that regularly catch wild animals still get most of their nutrition from food provided at home, new research shows.


========================================================================== University of Exeter scientists used forensic evidence from cats'
whiskers to see what regular hunters of wildlife had been eating.

The results showed that about 96% of their diet came from food provided
by their owners, while just 3-4% came from eating wild animals.

This suggests that predatory instinct -- rather than hunger -- is probably
the main reason why some domestic cats regularly hunt wild prey.

"When food from owners is available, our study shows that cats rely
almost entirely on this for nutrition," said Dr Martina Cecchetti, of
the Environment and Sustainability Institute on Exeter's Penryn Campus
in Cornwall.

"Some owners may worry about restricting hunting because cats need
nutrition from wild prey, but in fact it seems even prolific hunters
don't actually eat much of the prey they catch.



==========================================================================
"As predators, some cats may hunt instinctively even if they are not
hungry - - so-called 'surplus killing' -- to capture and store prey to
eat later." The researchers trimmed a whisker from each cat in the study,
once at the start and once at the end.

Stable isotope ratios in the whiskers were then analysed, allowing
the sources of protein from different wild and provisioned foods to
be identified.

The team also tested the effects of different measures designed to
prevent cats killing wild prey.

These measures included bells, Birdsbesafe collar covers, meat-rich diets, providing food using a puzzle feeder and regular play (a previous study
by the Exeter team showed meat-rich food and daily play reduced hunting
by cats).



========================================================================== Based on analysis of their whiskers, cats with a Birdsbesafe collar
cover consumed less wild prey -- probably because they caught fewer birds.

"This study reassures owners of cats who hunt that the motive to hunt
is instinctive, not driven by nutritional needs," said Susan Morgan,
Chief Executive of Songbird Survival, which sponsored the study.

"Furthermore, pet owners can help us reverse the shocking decline
in songbirds via three simple, 'win-win' steps: fit collars with a
Birdsbesafe cover; feed cats a premium meaty diet; play with cats for
five to ten minutes a day to 'scratch that itch' to hunt.

"In the UK, we've lost half our songbirds in 50 years, but we can all
help to stem this tide." Cats in the study were all regular hunters
that had frequently and recently caught wild animals.

The research team worked with a project advisory panel, including feline
vets and behavioural specialists, iCatCare and the RSPCA, which approved
the research protocols.

========================================================================== Story Source: Materials provided by University_of_Exeter. Note: Content
may be edited for style and length.


========================================================================== Journal Reference:
1. Martina Cecchetti, Sarah L. Crowley, Cecily E. D. Goodwin,
Holly Cole,
Jennifer McDonald, Stuart Bearhop, Robbie A. McDonald. Contributions
of wild and provisioned foods to the diets of domestic cats
that depredate wild animals. Ecosphere, 2021; 12 (9) DOI:
10.1002/ecs2.3737 ==========================================================================

Link to news story: https://www.sciencedaily.com/releases/2021/09/210930104829.htm

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