The only animals I'm not comfortable with are parrots but I'm learning as I go. I'm getting better and better at 'em. I really am.

When man learns to understand and control his own behavior as well as he is learning to understand and control the behavior of crop plants and domestic animals he may be justified in believing that he has become civilized.

It wasn't a problem for me drawing humans although I had originally come to the studio with the idea that what I had to offer them was my knowledge in the drawing of animals.

No part of the world can be truly understood without a knowledge of its garment of vegetation for this determines not only the nature of the animal inhabitants but also the occupations of the majority of human beings.

The animals that depend on instinct have an inherent knowledge of the laws of economics and of how to apply them Man with his powers of reason has reduced economics to the level of a farce which is at once funnier and more tragic than Tobacco Road.

Art owes its origin to Nature herself... this beautiful creation the world supplied the first model while the original teacher was that divine intelligence which has not only made us superior to the other animals but like God Himself if I may venture to say it.

The intelligence of the lower forms of animal life like a great deal of human intelligence does not involve a self.

I do not want to go into its physical reasons: the construction of the human body is different from that of carnivorous animals. But man's intelligence is such that it can be utilised to defend any-thing he does whether right or wrong.

Perhaps measuring animal intelligence by comparing it to human intelligence isn't the best litmus test.

I think that animals aren't less intelligent than humans they're just of a different intelligence. We have five million smell-sensitive cells in our nose they have two hundred and fifty million - they can smell emotion. They can smell different types of emotion they just have another type of intelligence.