Billy tries to catch a bothersome beaver, but discovers some poisonous water moccasins blocking the way. And when a dentist's office is filled with a mysterious stench, Billy sniffs out the cause--it's a dead cat under the building.

Billy deals with a case of reptile dysfunction when he's called to a ranch to handle an alligator that's threatening some pet llamas. Plus, there's more dysfunction back at the office when Ricky breaks up with ex-wife Pam--again.