Have you ever been playing with your dog only to notice that their teeth are visibly — and audibly — chattering? Teeth chattering in dogs is a pretty common behavior, although it can be unsettling.

Is it a woodpecker? Is it a cicada? Is it a parrot who learned Morse code? No, it’s Silvester, the family cat, who just happened to spot a bird outside the window. If you own a cat, you’ve likely ...