A total of 100 cats, from two different shelters in Scotland were used in the experiment, whilst the other animals were examined from zoos and animal sanctuaries in the UK and USA. 

‘They’re cute and furry and cuddly, but we need to remember when we have cats as pets, we are inviting little predators into our house,’ psychologist Dr. Max Wachtel told 9NEWS.

‘For a lot of people, it is worth it. Cats can be fantastic, sweet companions. Until they turn on you.’ 

Only their size prevents the cat from being able to unleash its full predatory qualities.