Animals are better at understanding people...
A generality, yes, but very often generalities are spot on.
But think on it. An animal gives you devotion, true devotion and trust. People don't display this open acceptance. I know Josh will cringe, but I do a lot of vet style work. Force to. Often when you are far away from things, it's hard to get vet to give a herd of cats shots, hard to get one to come treat a horse when it's sick. Poke one of my cats with a needle, he will fuss and fight, but never takes it personally. Kitty's love doesn't change. Without words to justify my actions, she has an understanding of me that I won't do anything to hurt her. So if I poke her with a needle, she may not like it, but she comprehends I'm doing it for a reason. Two minutes after, she is back to loving me, all forgiven.
I'm sure if I poked my husband with a needle, he would not be anywhere so understanding.