Is it possible that a human or any other creature can die from pain? I googled and found different answers. Some articles say Yes while others say No.
Can humans live without eating food, just by drinking water? How long can we survive just by drinking water everyday?
It is tragic, but apparently Killer whales and Dolphins can commit suicide too (e.g. here)... This suggests they can become depressed. I wondered whether they were "clinically" depressed like many ...
I am on a number of reptile groups and I often hear freezing recommended as a humane way to get rid of surplus feeder insects. However, they can also revive if you don't leave them in there long ...
Both elephants and humans perform rituals when deaths occur. However, I do not see any evolutionary benefit of this. The rituals take time, which apparently could be better spent hunting, foraging, ...