I think they are purer than humans. And honestly, I like them better. But, humans are humans and animals are animals. If I had to choose between saving a person and saving an animal, I would save the person.
But, I'd rather go somewhere with my dog than another person. It's that unconditional love and loyalty they have. Not long ago I had a huge fight with someone I had been best friends with for 5 years, literally I had bent over backwards to help her when she needed it. But, the second I didn't support something she chose to do, she turned around and told me what she 'really' thought.
Since then I've just had that nagging thought in the back of my head that 'if my best friend can hate me that much, but act like we are close as sisters' then anybody can do the same thing. Dogs aren't like that. Either they love you or don't. They don't put up an act and they don't lie.
Lets just say I trust dogs over humans. You know what they feel about you, no facades. They don't look you in the eye, they are scared of you. They growl, they don't want you near. Bark, then they are surprised and warning others about you. Wag their tail, they accept your presence. It's nice and simple. If people were like that, the world would be a better place. -_-