In Sorry, Grumpy Cat the author David Salisbury points out that dogs actually are smarter than cats, though both are rather dumber than humans. Of course both are smart enough to get along with us, for we can be a tolerant and understanding beast.
One thing to note is that according to the article the North American raccoon is a remarkable intelligent animal for the brain size it has. Sorry, Europeans, but your raccoon settlers will be a part of your environment for a long time to come.
Another thing to note here is that in the environments we supply to the life around us the fact that an animal is better able to accept the presence of humans means that that animal has a better chance of survival, and so a better chance at reproduction. And that the smarter an animal is the easier it is for him to accept human presence, and even interaction with humans. Though sometimes, as with cats and tasmanian devils, how the animal associates with his mother makes a difference, for it would appear that both species see us as mother figures.
Anyway, I thought you’d find this interesting.