Oy.

Every cryptologist should be forced to own dogs, cats, foxes, ferrets, sheep, horses, cows, and goats -- and to have an examination on what their body parts look like. And if they can't tell a canine paw (with overgrown dewclaws from living in a feral condition) from a chupacabra, then they need to have their license revoked.

Publically.

Canus domesticus, with overgrown dewclaws. Any animal control worker should be able to identify that one with one eye closed.