Uh, this is the Doggie Ping list. Cats and Dogs are mortal enemies. Cats and Mice are mortal enemies. As a result, Mice and Dogs are sort of friends.
I learned all this by watching Tom and Jerry, btw.
It is true that you can make a dog and a cat live together and be friends. It is also true that Heather can have two mommies. It doesn't mean it is not a perversion of nature.

If you don't have anything nice to say about perversions of nature, don't say anything at all. Post photos!

I think it's "cat people" and "dog people" that are mortal enemies :-) I'm an oddity: I love both to death.