Pigby is a pot-bellied pig whom Olive Snook befriends when she moves into the nunnery. Pigby is the only one in the nunnery to whom Olive confides her secrets. She often likes to hunt for truffles with her. It was revealed that Pigby was responsible for the death of Sister Larue. After her exposure as a murderer, she went with Olive. Afterwards, Pigby and Ned's golden retriever, Digby, began bonding. It should be noted that Pigby's name is only one letter away from Digby, and is essentially a portmanteau of Pig and Digby. This may or may not be coincidental.