While I was making every single bearhog in Spore, I stumbled upon a very peculiar species--the wading gringlo.

Of course, this is a fairly obvious homage to the reedstilt from After Man. But the characteristics it has from Hydro's attempt to make it live and behave similarly to the reedstilt has considerable implications for what its descendants may have looked like if it had survived.
Like all gringlos, the wading gringlo was an endotherm. Had a descendant moved inland and perhaps shrunken, the hairs covering its legs might have mutated to cover its entire body, creating an effective insulating coat. With this hypothetical descendant surviving in the wake of the ice comet impact event, it may have proceeded to diversify,
forming a new major group of fuzzy endotherms resembling twin-tailed mammals with dinosaur-like heads and necks.