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Calvin helps one of his doggy students cope with missing his owner while he's at school. Even better, Calvin helps the owner when she needs back-up dancers at her dance performance. Cue the Mutt & Stuff hip hop dog dancers!

It's Class Picture Day at Mutt & Stuff, and Calvin gets all the dogs dressed up in costumes for their puppy portrait! But the fun comes to a halt when two dogs want to dress like a pirate, and there's only one pirate hat. Arrrg!

When one of Calvin's students won't budge out of her new fancy doggy carrier, it's up to Calvin to find out why, and then get this doggy movin' and exercising!

While putting together a surprise birthday party for his best friend Zippy, Calvin can't figure out the perfect gift to make his buddy happy. Calvin's dad arrives and offers some great advice that helps Calvin.

The dogs at Mutt & Stuff are putting on a circus! But the show comes to a halt when one dog gets upset that his trick might not be good enough. Not to worry, Calvin saves the day with his guidance and friendship!

Stuff tells Calvin that he wants a pet of his own, so Calvin gets Stuff a goldfish and teaches him what it takes to be a good pet owner. Stuff quickly learns that owning a pet is a big responsibility.

Zippy digs up a genie lamp in the front yard, and a genie appears! After granting wishes to all of the dogs, Stuff wishes himself into a genie and goes on a wishing spree!

The class can't wait to go outside to see Zippy's new trick, but their plans get washed away when it starts raining. When Calvin switches plans and sets up a day of indoor doggy fun, one of the dogs has an accident.

It's a cowboy-themed day when a country singer comes to Mutt & Stuff with a scraggily dog she found on the road. Calvin and the class help get the pooch ready to be adopted, but the little dog melts the singer's heart.

Doggy rock star Lady Woof Woof is visiting today! Her biggest fan Stuff does his best to be a helpful pup for his new friends, but he keeps comically messing up in his attempts.

It's Race Day at Mutt & Stuff, and Calvin has invited race dog extraordinaire Mario Bonedretti to join in on the racing fun. The dogs learn a thing or two about playing by the rules.

Today there's a new student at Mutt & Stuff, and he oinks instead of barks - he's Skippity Boo the pig! The dogs and Skippity Boo have a ton of fun playing and having a hoedown doggy dance party!

To get one of his nervous dogs calm before a vet visit, Calvin plays a series of fun and calming games. But it turns out there is an even bigger and fluffier problem ahead - Stuff has to go to the vet too!

When Stuff and the dogs put on a rock concert, they turn to Gabi Groomer to be their singer.

When Stuff breaks his favorite chew toy, a tiny Chew Toy Fairy arrives to fix it, but then her magic wand breaks.

When Stuff uses his new magic book to perform tricks, he accidentally turns Calvin into a chicken.

Zippy wants to enter an online contest to be the best action dog, but when his brothers show up, the siblings become competitive as they try to become the next Dog Star.

Olympic medalist Simone Biles comes to Mutt & Stuff and invites Calvin and the dogs to join her gymnastics team; Calvin teaches the dogs about being prepared.

When bossy Princess Pickles demands that everyone build her a princess doghouse, Calvin must teach her how to cooperate with her classmates.

Noodles the mouse plays too many jokes and causes lots of mischief, so Calvin reminds him not to take things too far.

The dogs must learn how to be good guests and follow the rules when Annie takes the class to a new doggy play space called "The Woof Zone."

When Super Sammy goes on vacation, the super villain Smarty Cat tries to turn Mutt & Stuff into a school for cats.

Siblings plan a party for their dog's birthday, but they argue too loudly over what kind of party to have and almost ruin the celebration.

Stuff's Uncle H.R. Pufnstuf is coming to visit Mutt & Stuff! Stuff wants to make sure everything is perfect for Pufnstuf's special visit, and he goes a bit overboard in an attempt to impress his favorite uncle.

The dogs play video games all day, but Calvin wants them up and moving, so he contacts the famous gym instructor Jumping Jimmy.

A race is held at the school and TommyTortuga, the race tortoise, joins the fun and teaches Noodles a lesson about how slow and steady wins the race.

Sad about being the smallest dog at the school, Pixie tries to use a grow ray to make herself bigger.

Stuff tries to figure out which career he could do when a rescue dog, sled dog and seeing-eye dog visit the school.

When Zippy hits a home run to the bottom of the ocean, the dogs ride in a submarine to find the missing ball.

Calvin and the dogs go on a safari, but when the guide gets sad about not finding animals, the dogs help her search.

Calvin and the class must find a way to save their school when a determined train builder decides to build a train right through Mutt & Stuff.