The cat is a monster? (2016)

A man called Ethan has a cat and it turns out he has to take his Cat to the Vet, the doctor tells him that his cat is turning into a monster, Ethan doesn't want to believe this, he tells his family but they do not accept it, the cat at this point is at the Vet. Ethan then learns that his Cat has escaped and then one day at his home his Cat attacks him and he dies.