Cats and dogs, the mightiest enemies this world has ever seen, are both warm, both cuddly and both have assumed the title of Man's Best Friend at least once in their lives.
But, despite this, they're very, very different.
This video - which features puppies AND kittens - perfectly sums up the crucial differences between cats and dogs - and it is, in a word, amazing.
Dog: Come on baby, you can do it. That's it - you've got it. I knew you'd be able to walk down those stairs by yourself!
Cat: shove Welcome to the real world, kid.
We're still laughing now...