A little girl has a birthday party for her puppy when he turns one year old.

When Mudge gets sick unexpectedly, Henry does all he can to make him feel better.

Two friends learn that, while each of them is good at some games and bad at others, they can still have fun together.

Tiny is a very big dog who loves to dig, and when it is time for his bath, his owner has trouble finding a place to bathe him.

Marisol, who lives in Puerto Rico, wants a dog very much but her grandfather will not let her have one, until a skinny mutt wins him over.

No one loves to play more than Henry's puppy, Mudge. And when Fluffy the cat joins Mudge for a play date, the games are just beginning. From running to hiding to climbing galore, these two just might prove that cats and dogs really can be friends.

Grandpa helps his favorite grandpup to avoid scratching his chicken pox by telling how he once had to fight off an octopus during a terrible storm.

While trying out the spy glasses, spy hat, and other items in their new spy kit, seven-year-old Henry and his dog Mudge make a new friend and form a spy club.

In the autumn Henry and his big dog Mudge watch the leaves turn, meet with some Halloween spooks and share Thanksgiving dinner.

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.