New research has shown feral cats cover over 99.8 per cent of Australia's land area. By comparison, 85.1 per cent of Australia has internet access.

That's a lot of feral cats, and they are causing huge problems for our wildlife.

Australia is the only continent on Earth other than Antarctica where the animals evolved without cats, which is a reason our wildlife is so vulnerable to them. Credit:Graham Tidy

40 of Australia's top environmental scientists brought together evidence from almost 100 studies in this latest research.

"Australia's total feral cat population fluctuates between 2.1 million when times are lean, up to 6.3 million when widespread rain results in plenty of available prey," said Dr Sarah Legge from The University of Queensland.