Watch the video I posted above the last few minutes show rats committing suicide. They are jumping to drown. I watched a program on Discovery channel where they showed this .
Peace Mirch
The lemmings in the video according to the commentator are not committing suicide, but are moving through an urge and by accident fall or tumble into their demise. However, they still swim to get away. And if any find safety they will survive.
It still shows that those animals are not committing suicide rather they cannot do so because they are not self-aware. It is a clockwork mechanism designed to make them migrate not to kill themselves that drives them to do dangerous things.
Humans commit suicide purely for the reason of them not being happy in this world. Animals do not do that I think. So the video does not satisfy me sorry.