Verified answer

The only documented animals that kill out of pure hatred are lions and hyenas - they hate eachother and will kill eachother if given the chance. Anger - I'm sure you've seen a dog snap and another that's bothering it, or a person that's bothering it - I have two parakeets that get mad at eachother and have screaming fits, pecking at eachother, so I'm sure most animals can get angry!

Well I have seen my dogs become angry with one another when one wants to play when the other didn't and would snap at the playful one. I wouldn't call this hate for the two dogs grew up together, but there was sure enough anger for a few seconds.

I also watched a documentary that had me saying "Hmmm!" afterwards. The name of it was "National Geographic: Eternal Enemies: Lions and Hyenas". The male lions truly seemed to have a hatred for the hyenas. I mean they would attack just to be attacking, the pride was in no danger and there weren't any cubs to be protected.

I am a firm believers that a good number of animals (practically all) have emotions the same as humans may not be as intense, but they have them.