Kitty Speak - this is interesting. some people believe that because cats have different "tail" language than dogs this is the reason for their feuding. But when a dog is raised as a young pup with cats, he learns cat "tail language".
Drawing "Book Collector with Six Cats (one hidden)" by Edward Gorey. Illustrator Gorey adored cats, had many, and left the bulk of his estate to a charitable trust benefiting pets. Image credit: The Edward Gorey Charitable Trust