Leader Dog is an animated film series on Nicktoons. The series was produced by Animation Collective, created by Larry Schwarz and debuted in 2004. For a time a full 30 minutes series was planned, but the idea was scrapped due to lack of interest from viewers.

This show is about a spunky dog who is abducted by aliens from Planet Zmed, whose king is King Adrian, sets two of Zmed's explorers, named Dave and Blark, in search for Earth's leader; the one that everyone follows.

At the very moment that they reached the Earth, a dog was trying to escape a maximum security city pound. With so many dogcatchers chasing the dog, Dave and Blark mistook the dog for Earth's leader. Immediately, they caught the dog, and the people of Zmed swore him in as a leader.

Mainly, the newly named "Leader" is showing the people of Zmed what and how he does things on Earth. But with Leader being a dog, he is mainly showing the race what he and other dogs do on earth. With this, some of the more canine things he does are considered great feats to the Zmedians, like drinking from the toilet, playing dead, and even having a massive and rather nasty bowel movement.

The characters consist of King Adrian, the king who loves Leader and his ways, as well as Adrian's son, a spoiled young prince named Prince Guz who totally despises Leader in every way; and the twin explorers named Dave and Blark who saved Leader. Each episode is only one to three minutes long and aired randomly on Nicktoons.