he eated an cat

Not really canon since it was only in an email that was scrapped and went unused https://freddy-fazbears-pizza.fandom.com/wiki/Scrapped_E-Mails
That and it's generally just a dumb edgy for the sake of it detail that doesn't even really make sense in the lore. The children's spirits in the animatronics only ever acted violently towards people that reminded them of their killer William Afton like security guards wearing the same purple uniform he wore. Probably why it was scrapped.