According to pet statistics, In the United States, both dogs and cats have a population of around 80 million, which is over 25% of the human population. Although the total number of pet fish exceed dogs and cats, way more families have dogs and cats. They are the most popular pets.
The question is, why are dogs and cats the most popular?
Talking about the cuteness, rabbits are also cute.
Talking about smart, there is always monkey.
Talking about beautiful, there are plenty of other good looking pet species.
What makes them the most popular?
Is it a coincidence that dogs and cats are both carnivore?
My mother used to notice why on Animal Planet they always "cheer" for the predators whenever there is a chase.
Do humans prefer predators over prey because we ourselves are on the top of the food chain?
Why are dogs and cats the most popular pets? 
