Season
Season 7 Episode
- Season 3 Spider's Little Daddy
- Season 3 Tricycle of Terror
- Season 3 Dumb Luck
- Season 3 No Body Loves Grim
- Season 3 Lil' Porkchop
- Season 3 Skarred for Life
- Season 3 House of Pain
- Season 3 A Grim Prophecy
- Season 3 Mandy Bites Dog
- Season 3 Nursery Crimes
- Season 3 My Peeps
- Season 3 Nigel Planter and the Chamber Pot of Secrets
- Season 3 Circus of Fear
- Season 3 Bully Boogie
- Season 3 Here Thar Be Dwarves!
- Season 3 Which Came First?
- Season 3 Substitute Teacher
- Season 3 Super Zero
- Season 3 Sickly Sweet
- Season 3 Bearded Billy
- Season 3 The Nerve
- Season 3 Test of Time
- Season 3 A Kick in the Asgard
- Season 3 Five O'Clock Shadows
- Season 3 Attack of the Clowns
- Season 3 Complete and Utter Chaos
- Season 3 Whatever Happened to Billy Whatishisname?
- Season 3 Just the Two of Pus
- Season 3 Chocolate Sailor
- Season 3 The Good, the Bad and the Toothless
- Season 3 That's My Mummy
- Season 3 Toys Will Be Toys
The Grim Adventures of Billy and Mandy - Season 3 Episode 16 Which Came First?
8.10 11 minutes While going to a science museum, Billy and Mandy's school bus breaks down in the middle of the desert. After digging for fossils, Billy, Mandy and Grim wander around and find an abandoned mine, where Billy is captured by a giant, mutant chicken. When Mandy and Grim go to rescue him, they find an underground laboratory from the days of the Cold War where mutant chickens were created. The mountain makes eruption, the chickens are roasted by lava, and the whole class obtains food so they do not have to resort to cannibalism.
