Mental disorders in animals?

Question

Do animals have mental disorders? Not neurois that might be caused by humans or induced by drugs in labratoies, or disorders caused by age, but mental disorders they are born with I would like to know if they have an animal equivelent of schizophrenia, or split personalities. Is there such a thing as Doggy serial Killer? Kitty Sociopaths? Is there Autism in animals, or are all these thing just in the human realm?

Answer 1

I swear my ferret has multiple personalities... she has the worst mood swings...

I named her Sybil :D

Answer 2

I'm sure those arent real diseases for pets but it can be.. o_O

Yes pets do have mental disorders from defects and from birth. It all depends on the parents just like humans.