Cats are solitary hunters but they form colonies, and these colonies have social dominance hierarchies. They have sophisticated vocalization and body language that's perfectly comprehensible -- if you're a cat.

They are not as well domesticated as dogs, so humans cannot read them as well as they can dogs without training themselves in cat communication. Domestication has altered the dog on the physiological level to communicate with humans. Among other things, dogs have extra eye muscles that allow them to emote in ways humans instinctually understand.

Dogs will also follow the gaze of a person, which is unique to them, as far as I remember.

Cats will shit on your pillow if they are unhappy with the environment for some reason. That's particularly disturbing.

I have a cat and three dogs as pets and it's interesting to see how they all interact with us and with the world differently. Even the three dogs are unique. They are all different breeds and very different in size, so it's interesting to see what they have in common and what is unique to the individual dog.

I have two dogs. They have "Sophia Grace and Rosie" energy. I don't know if you remember these two precocious British girls who were frequent guests on Ellen DeGeneres's program on the USA, and they would talk and rap Nicki Minaj songs. But one of them, Sophia Grace, was super energetic and outgoing and the other one, Rosie, would just hang back and act cute. And that's how my dogs are. They are as close as any sisters despite being unrelated and of different breeds, but one takes the lead and the other is content to follow (or just have a nap in her safe, easily defensible corner).

> Cats will shit on your pillow if they are unhappy with the environment for some reason. That's particularly disturbing.

That's a territorial insecurity thing, though, right? It's not a protest or revenge.

It is definitely naturally disturbing to humans, though.

Yeah my cat and the most recent dog to join our household did not get along, and the cat let us know he was angry with the situation in various ways, including pooping on our bed. We got him a multi-level cat cage that he could go into and out of at will, but that was inaccessible to the dog, and the pooping in our personal spaces stopped literally overnight. He's much happier now that he has his own space he can retreat to when the dogs come in the house in the evening.