2. Cats
Cats can be the most confusing and individualistic of all animals. One minute, they are all over you, meowing and begging for your touch, the next minute, tail in the air, they stride off. Some of their mannerisms are highly amusing like chasing string or sleeping on the TV. Another way that cats assert themselves is bringing something they killed outside, inside the house and displaying it with pride, right next to that expensive bowl of kitty food that you have bought.