Cats are queer creatures. They at times seem to be very smart and manipulative. At least the three we saw to their grave were. There are many negative adjectives applied to cats, yet, I quite like them.
Birds are just a bit dumb. unless they are parrots, where they are a bit smart.
Dogs are without artifice. What you see is what you get. They have such an exuberant joy for life. In a park I walk through often enough, at times there is an informal large gathering of dogs and owners, with the dogs off leash and to watching them run and chase each other fills me with pleasure.
This clip is not hilarious, as suggested but just a three second glimpse of dog fun.