I was using the similarities between humans and other animals to show that humans aren't evil, and then pointed out something that I thought was "uncommon" from other animals.
I was trying to say what Automaton said in a roundabout way :/. Ever heard of "feral children"? There was this girl that was raised by dogs who didn't have human morals of "right and wrong". she only had the basic instincts that she was born with and a way of surviving that dog's abide by. It may be weird to say hat humans could survive without morals, but I'm not talking about something basic like: "it's wrong to stick your hand in fire", I mean morals that identify you, such as: "If I kill this animal, their family will be sad, therefore that is bad"
Wrath is the cardinal sin associated with suicide and passion, killing oneself because you are upset at yourself. Find an animal that actually commits suicide (not Lemings). Also, do animals get passionate about things in real life? Is there really a bear that worries about forest fires?
You were not using similarities from what I could see. In fact, the end of your post and the beginning contradict each other. You're saying that humans are the only ones that commits suicide. You're also questioning if animals get passionate about things like humans, as if to say that is another thing that humans do and animals don't. These assumptions are based on what? What research have you done to support your theory? It seems like you can't actually grasp a foreign concept such as animals having qualities similar to humans because you can't see it from an animal perspective, so your gut reaction is to say that it doesn't exist or doesn't happen.
This is the exact problem I have, because you're stating it like it's a fact until proven otherwise (that's not how burden of proof works, by the way), and then basing your whole argument off of it. It's almost impossible to know what animals are thinking, and what sort of emotional response they're having, if any at all, yet you're perfectly content stating facts on their behalf without actually knowing if you're correct or not. It's like people who say that homosexuality doesn't exist in animals as an argument for homosexuality being unnatural. You're supporting your argument with information that's baseless and wrong.
Now that I've ranted about the stupid use of animals vs humans to lie your point across, let me actually talk about your request for proof that animals can commit suicide. Before I link you, I want to say that it was absolutely not difficult at all to find this article, and that if you actually did any research before coming here and posting, you'd probably already have learned the information in this article, saving us from this conversation. Anyway, from the Discovery website:
ANIMAL SUICIDE SHEDS LIGHT ON HUMAN BEHAVIOR. The most interesting bit in this article for me was about the Pea Aphids, which are little tiny suicide bombers. They explode themselves,
committing suicide, to possibly save their kin or kill an attacker. It's not the same way someone would describe someone who is suicidal, but it's still suicide.