Sorry for the double post, had some ideas i wanted to put out here.
My ideas will be mostly centered around amphibians, plants and fish. And making the tundra more interesting. Sound good to everyone?
First off,
The Dotorian. It has a life cycle like a frog, living in one place one way before growing into another. It starts out as a little more than a living helium balloon, just floating along in clouds of dozens of others. They are easy punctured, and have a habit of reaching full growth over land, resulting in a huge splatter of blood. To counter act this they are born in huge litters of 12-30. Upon reaching adult hood they plop down into the ocean as a huge benign starfish. If a limb is detached it will regenerate into a new Dotorian. This makes up for how fragile they and their offspring are. As adults they have an inner sac of digestive acid that they spray liberally on threats. Butchering them is very worthwhile however, and their ability to breath air makes them great guards against the deadly creatures of the world.
Next we have the lumbering beast that is the Collosal. For every three moves of a halfling these creatures take two. Its a whale sized arthropod covered in armor plating that curls up into a ball when attacked, despite its ability to knock holes into most other creatures. Will a medium beaching rate you will be sure to find atleast one of these curled up on a beach in your lifetime.
Stonefish, one of the most useless creatures on your custom generated planet. Its little more than a tender pink inside covered in a hard shell. You might be able to crack it, but doing so isnt worth the effort to get to the substandard meat.
Onto plants, does anyone know if its possible to make a plant only grow on bloody soil? I had an idea for red-weed.
Edit: Okay, so most of the Dotorian wont work. I was a bit misinformed... Hmm