The ecology of Mars was for the most part completely ruined during the Technology Wars where the great Terra-Forming machines were destroyed. While a few of these great atmosphere conditioning machines still exist, they are barely able to keep up with the current depletion of oxygen, much less make conditions better. The direct result of this is to have killed off all but the most hardy of creatures. The poles of the planet are the exception to this. There are more various species of animals crowded into the area of the poles than there are in the remaining 80% of the planets land mass. The list that follows is complete. In creating the following, I have tried to give the descriptions as provided by ERB, with the stats created out of whole cloth to fit the relative strength of a party.
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GRELD
Most of the animal life has disappeared,
but several very geneticallyadvanced species exist. Minianimals are sometimes
to be found in the wildbut they are protected from law.
Roon (moon of Greld) Air Fish of all kinds.
Fish occupy all of the normal
food niches commonly held by birds andmammals. The scavenger and parasitic
niches are filled by crustaceans ofall kinds.