Henry and his big dog Mudge try to keep busy inside the house during a thunderstorm.

Henry's family takes in a stray cat, the ugliest cat they have ever seen, and an amazing relationship blossoms between it and their big dog Mudge.

Henry, his dog Mudge, and his parents go on a quiet camping trip to Big Bear Lake, enjoying the clean smell of trees and wonderful green dreams.

At first Henry's very neat cousin doesn't like the cookies from under his bed or Mudge's slobbery kisses, but when they all play frisbee, she begins to enjoy her visit.

Henry and Mudge the dog's boring weekend becomes interesting when Mom suggests building a castle in the basement.

Henry worries about what will happen to his big dog Mudge duringtheir visit to his grandmother's house in the country.

Henry and his big dog Mudge celebrate Henry's birthday with a piñata, a lively birthday party, and a cake shaped like a fish tank, making May first the best day ever.

Henry, feeling lonely on a street without any other children, finds companionship and love in a big dog named Mudge.

Mudge looks forward to the Mother's Day surprise that Henry and his father cook up for Henry's mother.

When Henry and his dog Mudge go with Henry's parents to visit Great-Grandpa Bill in the home with lots of other grandpas, they lead them all on a wonderful adventure.