Gantos, Jack

Sarah takes her rotten cat Ralph to school for Show and Tell and he behaves terribly, as usual, by spoiling everyone's show.

When he goes to a carnival with Sarah and his cousin Percy, Rotten Ralph learns that winning is not everything.

Moving with his unbearable sister to Miami, Florida, Jack tries to break some of his bad habits but finds himself irresistibly drawn to things disgusting, gross, and weird.

Rotten Ralph comes to appreciate Sarah's healthy cat food after he gets sick from eating out of trash cans.

Hoping to beat his cousin Percy in the cat show, Ralph allows Sarah to help him spruce up his image and get in shape.

It is Valentine's Day and Rotten Ralph, a very, very nasty cat, is up to his rotten tricks.

Rotten Ralph, the nasty red cat, proves himself to be the real monster on Halloween.

Moving with his unbearable sister to Miami, Florida, Jack tries to break some of his bad habits but finds himself irresistibly drawn to things disgusting, gross, and weird.

When his father rejoins the Navy and moves the family to Cape Hatteras, North Carolina, ten-year-old Jack becomes confused by a crush on his teacher, contradictory advice from his parents, and a very strange neighbor.

Afraid of being left alone, Rotten Ralph, the nasty red cat, follows Sarah to school and tries to prevent her from making new friends.