Do animals kill for pleasure as humans?
First of all, how can we know if an animal can kill for fun? Does a predator feel pleasure or a sense of accomplishment when it’s putting its claws and teeth in the victim’s flesh? Unfortunately we can’t know for sure, but we can definitely try to have an educated guess for their motivation for killing besides hunger or defense.
Thinking that predators are the only animals who kill others is wrong since there are so many cases when an animal may have not killed another for food. Think about herbivores, like a deer, an elephant or a moose attacking and killing someone or about the carnivores which kill animals but don’t eat them afterwards. Yet, even if it wasn’t for food, the kill’s motivation remains a mystery and we can’t be certain it was for pleasure or fun. Taking a look at the domestic life of pets such as cats and dogs, many do actually eat the prey. Is a cat enjoying the hunt or the chase of a mouse as much as a dog barking before biting mail posters or squirrels? Clear studies showed that it’s part of their instincts that makes them hunters. In the case of herbivores we can motivate their kills bringing out reasons such as defending territory or themselves. Even chimps when they hunt, they consume the meat of the critters they hunt.
Therefore, until science evolves even more till the point when we can see what’s really going on in their mind, it remains a mystery.