Actually, there are quite a few. [1] Since it seems to me that "fun" or "malice" or other motivations cannot be measured that precisely in animal kingdom, i t

Actually, there are quite a few. [1] Since it seems to me that "fun" or "malice" or other motivations cannot be measured that precisely in animal kingdom, i think it is fair to say that surplus killing covers your question. [1] https://en.wikipedia.org/wiki/Surplus_killing https://en.wikipedia.org/wiki/Surplus_killing