Self-Directed: Facial expression - Intial research continued

I am looking at the the facial expressions in animals from my own photographs I have taken, and here are a few examples.

I have noticed that dogs are quite good for expression because they have little tuffs of hair that are like eyebrows that move when they are looking at things, like we do as humans. I think that if the animal has similar features to humans, like the eyebrows on the dog, it makes it easier for humans to read as facial expression or to anthropomorphise the creature, to make it seem more like human when its not.