can you go to jail for killing a cat?

Probably not, but why would you deliberately kill a cat? Was it threatening? Your neighbors cat? An annoying cat? or, you just wanted to kill a cat?

if they found out you could get fined

idk

yes because pets are just like human but there smarter than us so i nmy opinion yes you can go to jail for abusing...

if done in purpose or because of negligence, yes, although actually going to jail for a single cat-killing is unlikely. Depends on what you actually did.

To kill a cat legally, it must be euthanized by a certified euthanasia technician/LVT/Vet. The only other legal way is a gun shot to the brain in a proper way. And you may not have a cat destroyed that does not belong to you.

Any other method is cruelty to animals and can be a misdemeanor or felony depending on the situation.

If you need your cat killed, most pounds will do it humanely for a small fee. If you know somebody abusing cats, report them. If you're feeling the urge to kill a bothersome cat that's not yours, call animal control if it's causing a legitimate problem. If you're wanting to kill a cat for fun or experience, see a psychologist.

Possibly, or a gigantic fine.

Yes.

Yes. I bet you're Asian and want to eat cat meat. But yeah, you can go to jail