It may surprise you to discover who some of the culprits responsible for central Australia’s off-the-charts mammalian extinction rate are. Our feline friends are having a very large detrimental impact on our native animal species. There is a massive population of feral cats - estimated to be in millions - in central Australia and they are preying relentlessly on our small animals and birds. In direct response to this, the world’s largest fence is being constructed here to protect endangered species from their clutches - or rather, claws. Cats are obligate carnivores, or in other words, strictly carnivorous. The feral cats need to prey on the animals and birds for survival, but unfortunately they have quite an appetite for the act of hunting itself, and kill unnecessarily frequently. After extensive research into this subject, Professor John Woinarski from Charles Darwin University places the total bird population killed by feral cats at approximately 320 million and the total bird population killed by pet cats at about 60 million.