There is some debate over the veracity of a video showing a big black cat racing across grassland in Ballarat. Jack Gough discusses the impact of feral cats and invasive species on our native wildlife. Subscribe: http://ab.co/1svxLVE ABC News provides around the clock coverage of news events as they break in Australia and abroad. It's news when you want it, from Australia's most trusted news organisation. For more from ABC News, click here: https://ab.co/2kxYCZY Watch more ABC News content ad-free on ABC iview: https://ab.co/2OB7Mk1 Go deeper on our ABC News In-depth channel: https://ab.co/2lNeBn2 Like ABC News on Facebook: http://facebook.com/abcnews.au Follow ABC News on Instagram: http://instagram.com/abcnews_au Follow ABC News on Twitter: http://twitter.com/abcnews Note: In most cases, our captions are auto-generated. #ABCNews #ABCNewsAustralia