It's impossible to know. We humans don't know what goes through the minds of animals, and suicide means taking one's life purposefully. Although animais might appear to die in ways that look a lot like suicide, it's impossible to know whether or not it was intentional. ...Wow, I really am a nerd, aren't I? *puffs out chest proudly*
animais have feelings too, so of course they can. The only thing is that humans, who are also animais por the way, are the only ones stupid enough to actually do it por giving ourselves problems other than survival.
