The most intentionally violent animals are the ones with intelligence closest to people. Chimps and dolphins are pretty scary, and do things like rape and murder intentionally, but they're also some of the smartest animals. I don't think most animals give a second thought to those types of things.
Makes me feel like the world is doomed either way. When people are gone, something else evil will take its place.
But yes, dogs and cats are wonderful. Every violent dog I've met has only been reacting to the world around it. I work with animals and have seen many dogs and cats euthanized for the quality of life they're living, and the violence they've shown due to past trauma that makes them unpredictable and unsafe. I always advocate for more effort to be put in before that decision is made, but it's certainly funny how we can accept that dogs deserve to die instead of live a torturous painful life, but humans MUST continue on until we physically collapse and die.