Yes, pigs do eat their poop whether you are fine with this behavior or not. Let alone pigs, there are some other animals as well that snack on their feces. It's just that the pig's habit got highlighted somehow whereas, the rest of the animals are reaping the benefits of it a little less openly.

Do pigs eat garbage?

Pigs really do eat garbage, but their bodies are made to handle it. That doesn't mean that you can just feed your pet pig trash, though. Wilbur, Babe, and all their porky piglet brothers and sisters are omnivores, so they are just as happy chowing down on vegetables as they are digging into meat.

Which animal eats its own faeces?

For instance, coprophagia is practiced by lagomorphs (rabbits, hares and pikas), rodents (mice, rats, hamster, naked mole rats, chinchillas and guinea pigs), dogs, mountain beavers, baby elephants, hippopotamus calves and nonhuman primates (including gorillas, orangutans and rhesus monkeys), according to a 1991 review ...