Earl is in charge of potty training the baby, who escapes to do his business any way he wants.

Earl does the dirty work of organizing a civic protest against the TV powers-that-be when the baby repeats (constantly) a dirty word that he hears on the tube.

Earl is hired as a network executive when his answers on a test for new television shows prove to be surprisingly accurate.

Earl hits a bad golf shot that sails off the edge of the known world and into a new one -- new, that is, to the dinosaurs.

Robbie weaves a frightening tale for the Baby about Robbie turning into a caveman monster, which proves a little too hairy for the little guy.

The Baby becomes sick from a dirty pacifier and a visit to the modern doctor has the family suspecting he is selling them high priced snake oil.

Robbie dates Richfield's daughter, whose gluttonous reputation gives Robbie food for thought: he may be her next meal.

When Earl is caught by the Parent Police losing his temper at the baby, he loses his parenting license.

Charlene is charged with heresy and jailed after submitting her homework assignment claiming that the world is round and not flat.

The males, including Earl, Robbie, and the Baby, go into the wilderness to rediscover their ""reptiles within,"" while back home the girls warm their cold blood with the boys' beer.

After failing to mow the lawn, Robbie challenges Earl for male domination of the family... and wins.

Charlene signs up for a foreign student exchange program to get away from her family who doesn't understand her; and the Sinclairs get a bitter taste of a different culture when a French bird moves in with them in Charlene's place.

The four-leggers are blamed for the failing economy and legislation is passed to make their presence in Pangea illegal.

Baby becomes a hit sensation when he and Earl star in a series of commercials for a new frying pan. Earl is fired from the commercials and he and Monica start to worry that fame is going to the Baby's and Fran's heads.

Robbie resorts to using Thornoids in an attempt to impress a girl at school.

Feeling a need to have a job outside the home, Fran goes to work at a halfway house for amphibians, leaving Earl to take over the household day shift and look after the kids.

Robbie crosses over to the swamps and gets sold on the mammals' "swamp music", but they're liable to be sold out in a dinosaur record deal, which Robbie orchestrated.

When overwhelming urges to do the mating dance arise in Robbie, Earl prefers not to discuss it, but Fran waltzes into Robbie's classroom to educate the kids about it.

Ethel reads the Baby a story called "If You Were a Tree" about a dinosaur tree pusher who gets struck by lightning and swaps souls with the tree he's trying to demolish.

Robbie poses as a space alien and orders Earl to get involved in cleaning up Earth, never imagining that he would quit his job to launch an environmental crusade.

Charlene feels her family is neglecting her, so she gets their attention by winning the school talent show but her rising fame is riding on the backs of three young cavelings she found in the forest whose mother is looking for them.

Another one of the infomercial for a home course in how to become a paleontologist is supplemented by clips from previous episodes. Featuring the past clips from Season 2 to Season 3.