A collar-worn pounce protector, the CatBib™, reduces domestic cat predation of wild vertebrates in suburban Perth, Western Australia

  • Published source details Calver M., Thomas S., Bradley S. & McCutcheon H. (2007) Reducing the rate of predation on wildlife by pet cats: the efficacy and practicability of collar-mounted pounce protectors. Biological Conservation, 137, 341-348


This study is summarised as evidence for the following.

Action Category

Use collar-mounted devices to reduce predation

Action Link
Bird Conservation

Use collar-mounted devices to reduce predation by domestic animals

Action Link
Terrestrial Mammal Conservation
  1. Use collar-mounted devices to reduce predation

    A replicated, randomised and controlled study in Perth, Australia in November-December 2005 (Calver et al. 2007) found that wearing a ‘CatBib™’ “pounce protector” (a neoprene flap that hangs from a collar in front of a cat’s front legs, acting either as a visual warning or as a barrier to pouncing) for three weeks, reduced the number of cats catching birds by 81% compared to when the same cats were not wearing the ‘CatBib™’ (5 vs. 26; n = 56 cats). The average number of birds captured per cat was also significantly lower (0.29 vs. 0.88). Adding a bell to the ‘CatBib™’ did not further reduce hunting.


  2. Use collar-mounted devices to reduce predation by domestic animals

    A replicated, randomized, controlled study in 2005 in a residential area in Perth, Australia (Calver et al. 2007) found that domestic cats Felis catus wearing a collar with a ‘CatBib™’ “pounce protector” (a neoprene flap that hangs from the collar) brought home fewer mammals than did cats without a ‘CatBib™’. When equipped with a ‘CatBib™’, cats brought home fewer mammals (total of 59) than when not wearing a collar (total of 105). Adding a bell to the ‘CatBib™’ did not further reduce the number of mammals returned (with bell: 26, without bell: 33). Wearing a ‘CatBib™’ stopped 45% of cats from catching mammals altogether. In November–December 2005, in a random order, 56 cats underwent a period of three weeks wearing a ‘CatBib™’ and three weeks without a ‘CatBib™’. For the three weeks with a ‘CatBib™’, cats were randomly assigned either a ‘CatBib™’ only or a ‘CatBib™’ and bell. Only cats that frequently brought home intact prey were included in the study. Owners collected dead prey items and recorded live prey before release.

Output references

What Works in Conservation

What Works in Conservation provides expert assessments of the effectiveness of actions, based on summarised evidence, in synopses. Subjects covered so far include amphibians, birds, terrestrial mammals, forests, peatland and control of freshwater invasive species. More are in progress.

More about What Works in Conservation

Download free PDF or purchase
The Conservation Evidence Journal

The Conservation Evidence Journal

An online, free to publish in, open-access journal publishing results from research and projects that test the effectiveness of conservation actions.

Read the latest volume: Volume 18

Go to the CE Journal

Subscribe to our newsletter

Please add your details if you are interested in receiving updates from the Conservation Evidence team about new papers, synopses and opportunities.

Who uses Conservation Evidence?

Meet some of the evidence champions

Endangered Landscape Programme Red List Champion - Arc Kent Wildlife Trust The Rufford Foundation Save the Frogs - Ghana Bern wood Supporting Conservation Leaders National Biodiversity Network Sustainability Dashboard Frog Life The international journey of Conservation - Oryx British trust for ornithology Cool Farm Alliance UNEP AWFA Butterfly Conservation People trust for endangered species Vincet Wildlife Trust