I have created and drawn over 600 different species of animals. Some of them look rather normal while others are very weird looking.
It all started with a giant predatory opossum the size of a bear and then a colorful 12 ft. tall flightless bird and pretty soon I had zebras with rhino horns, wingless terror birds with tusks, giant echidnas with long necks and spiked tails, sharks with three dorsal fins, monkey creatures with rabbit ears, tiny winged lizards, giant two-legged sauropods, small creatures that look like a cross between an elephant and an aardvark, bipedal cattle, horned canids, six-legged rams, and the list goes on.
I have decided to create a planet that is similar to earth but on steroids, denser jungles, deeper oceans, higher mountains, a denser atmosphere, colder ice caps, etc. I have decided to call it Megaterra, which means "Great Earth."
There are literally millions of species on Planet Earth we know about and probably millions more we don't know about, so I can literally let my imagination run free but keep in constrained within reality.