The Adventures of Teddy Ruxpin - 1x26 - Uncle Grubby- Followmy.tv

Gimmick unveils his new book, "All About Fobs", which claims that Fobs must live near Rainbow Falls in order to maintain their bright colors. Fuzz points out that this isn't true, as Fobs are colorful no matter where in Grundo they live. Teddy and Grubby set out to do more research, and meet up with Wooly, who shows them three Fob eggs that were being abused by the Bounders, and Teddy, Grubby, and Wooly take the eggs to Gimmick's house when the parents don't show up.
Grubby keeps the eggs warm until the parents arrive, who explain that underground streams lead from Rainbow Falls to most parts of Grundo, which is how Fobs stay colorful even when they're far away from the falls.