Can động vật commit suicide?

idk

If a bọ cạp is surrounded bởi flames, it stings itself and dies because burning is the most painful way to die.

Yes

I don't think so.. My dog got ran over last night though. :(

I have heared of abused chó refusing to eat, same with cats. I would guess so. They just don't point súng in their mouths and pull the trigger.

I guess not...

What are those things that run and jump off a cliff in groups? .-.