Ecology of Kerren: The ecology of Kerren is in a Saurian Phase, with megafauna (big animals) dominating. Saurians are smooth skinned, partially warm blooded (they are endo thermic, but need help in regulating temp), reptilike animals. In northern or colder climes, they have proto feathers to create a bizzare fuzzy coat to keep them warm. They come in hundreds of different sizes and types. Insectoids and fish are also present. The insects are about 500% bigger than their terrestial counterparts. Fish, like Saurians, come in hundreds of different sizes and types. The only mammals and birds on this world come from Terra. The terrestrial animals that came with the Humans have found some nitches. Most of these animals are pet animals: Dogs, Cats, and Raptors. A few of these animals have escaped into the wild, but they really have not made a notable impact upon the environment. The cattle and goats all died off early of either preditors and then disease. The Rats never survived out in the wilds because the native rat like dinosarus. The terran insects have not been able to compete with their larger Kerran cousins. The saurians still rule the ecology.
In short, take a terrestrial environment, instead of mammals, birds, and such, make them Saurians and about 50% bigger than their terran counterparts. Sprinkle in a few odd creatures, like a megafauna (big dinosaur) and a dragonlike critter (Leapers, Swimmers, etc)
and Zhan Monsters
[The world is almost lost worldish in its critters... the normal ones are bigger and meaner than their terrestrial counterparts, plus we have a few saurians.]
[Dragons hate “pet” animals Dogs, Cats, Chirps Hawk These creatures are bigger and smarter than their terrestrial equivalents]