Do reptiles like to be petted?

Some do, some don't. I know several boas who love to be petted, even on their head, after they develop a taste for it. And that is the key: many reptiles don't take naturally to being petted. But once they get used to it, they often start to like it.

Many snakes will like to cuddle in warm, dark places, like T-shirts. If your idea of petting is an animal curled up on your stomach inside your shirt while you are reading a book, then a snake is a good pet for you.

Turtles and tortoises are not cuddly, but many like their belly scratched, i.e. the bottom of their plastron, and they will definitely express their pleasure.