Bull moose in mating season is claiming territory for mating rights.
Hippos are dangerous but AFAIK it’s generally about mating and territory… it might be true to say they attack whatever they don’t like, but is there much they don’t like without some reason?
According to this article brown recluse spiders do not attack “just because”.
Small birds chasing away larger birds is quite common and almost always because they don’t want their eggs eaten, and/or for territory reasons. This might count as enmity, though with a good (or territorial) reason.
Some dogs are fine with cats. My first cat though was killed by loose dogs in our own yard. She was old and was not aggressive, so at least some dogs will go kill a cat. Whether it’s hate or a sense of what they think they’re supposed to do, I don’t know. It might vary per dog.
I didn’t know wasps generally went after bees. I haven’t seen that, and I have seen a lot of wasps near bees. I have heard and read that wasps go after some other insects, including many insects that go after plants, but they do it to feed them to their young.
Not all bears are very dangerous to humans. Grizzlies and polar bears yes. Brown bears no.