For starters how would a whale become the same size as the other animals. Second, I think that mythical creatures would be good as well like dragons or phoenixes or pegasus and unicorns. Do NOT SAY FAIRIES! They suck. That reminds me of kerbecs/ceberus. That would be cool! Also what if they did prehistoric animals like tyrannosaurus rex and other guys. There is one insect that would be cool, SPIDERS. It would also scare the kids to death.
Wait, what is up with the flamingo guy and the shadow rider. where are their tribes. I think that shadow rider is a hog. A really good animal is a goat/ram.
There are multiple animals but if they start taking stuff of of, DIGIMON, POKEMON, MONSUNO, B-DAMAN CROSSFIRE, AND YUGIOH I will get really angry!
I wonder why they haven't made a base for the eagles, crows, and the gorillas. The gorilla tribe is awesome. I think that later in the tv show that they will find green chi and that they will mutate with insects. Lions grow butterfly wings, Crocodiles get spider legs, eagles would get two more arms, wolfs would get the ability to make webs, gorillas, would get the ability to climb onto stuff and that is it.