are we the only species that has the ability to commit suicide?

Maybe but other species eat their young. 😖

I think elephants do as well

I heard some ants will take suicidal actions when infected by a certain parasite that uses their dead body as a way to spread, but for the most part yes, humans are probably the only species that contemplates existence in the way that we do including choosing to die.

One of my favorite authors says that wanting to die is one of the very human desires that separates us from other animals

http://www.hopesandfears.com/hopes/now/question/213571-can-animals-commit-suicide

No only humans do it because they are influenced by everyone and thing targeting them

Nope, I have heard of quite a few others who do it, too.

Um, no. Lemmings, remember?

No way

No. Animals seem to do it.

Lemmings do I think

No bcz any species (assuming they are intelligent enough to make such thoughts) could just jump off of a cliff

I want to say that I heard of dolphins being known to commit suicide, idk tho.

I'm pretty sure there are animals that have killed themselves.