Pigeons are gentle and smart and have complex social relationships. Their hearing and vision are both excellent.

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

Medical research is "immoral even it it's essential."

The bottom line is that people dont have the right to manipulate or to breed dogs and cats ... If people want toys, they should buy inanimate objects. If they want companionship, they should seek it with their own kind.

I'm not only uninterested in having children. I am opposed to having children. Having a purebred human baby is like having a purebred dog; it is nothing but vanity, human vanity.

I have to think of the positive; that's how I cope.

When it comes to having a central nervous system, and the ability to feel pain, hunger, and thirst, a rat is a pig is a dog is a boy.