Dogs versus cats.

Dogs are always happy to see you, cats choose when they want to see you. So when a cat comes up to you, you know they are picking you and want to be with you. For that reason I pick cats

In my experience, dogs tend to get much more attached to the people who treat them well: they are in love with them, they are incredibly happy to see them every time, etc. It is not uncommon for a dog to die due to grief and depression when its owner has given it over to someone else.

Cats are much more selfish and narcissistic. They expect you to care for them extensively, and the more you care for them, the more their expectations grow. If you do not match those expectations at any point, they will scratch and bite you. If you annoy them in any way (and they are very capricious), they will fight you.

I could never get along with a cat and always ended up avoiding them, while with dogs everything always went smoothly. I was bitten by a dog once in my life, and that dog apparently had some sickness and was incredibly unstable. How many times I was scratched or bitten by cats I tried to play with, I have not even tried to count.

Ultimately though, both dogs and cats are too mainstream to my taste. I prefer exotic lizards. My personal favorite is Argentinian Tegu, and if I ever own a pet, that will be the one. They are as smart and friendly as dogs, less messy, easier to care for and in general just awesome: