Written by Norman Spinrad and directed by Dennis Steinmetz, it first aired in the United States on October 5, 1974 on NBC.

The Marshalls conclude that Dopey, a brontosaurus they encountered previously, is not useful in pulling their wagon, and try to lose him in the forest.

The family then proceeds to harvest giant carrots and turnips, only to have them stolen by Cha-Ka and the two elder Pakuni (Ta and Sa).

Will and Holly take turns with Cha-Ka in distracting the tyrannosaur long enough to let the other find momentary safety.

The Pakuni do not understand, but come to the same conclusion on their own, and lure Grumpy away while Alice is stuck on the opposite side of the crevasse.