Jetsko
Chirping
To be fair, most pet stores don't really sell many pets, just pet supplies. For example, hedgehogs are pets, but to get one, you usually have to go through a breeder, because I've never seen a pet store sell a hedgehog. Same with the Bengal cat breed. Never seen one for sale at a pet store. Just because a pet store doesn't sell a certain type of animal pet doesn't mean that the animal is never meant to be a pet. There are plenty of people who have wonderful pet chickens that function in every way as a pet.
I agree with everything else you said though! To me, chickens make super-versatile pets. Sometimes they make tasty ones too!