Dog food is made from other dogs.
My friend used to have this dog and his family really loved it. It had a collar with a big fake diamond on it. The dog was really sick so they took him to the vet and the vet said he had to put him to sleep, and he did. He told the family he would have the dog buried in the pet cemetery. A month later, my friend got a new puppy and he opened up a can of dog food and fed it to the puppy, then the puppy coughed up that big fake diamond from their other dog.