thanks for the answer.
so, except for one inaccuracy with an elephant and one with a horse runned down by a bear, because i didn't mention it should be said "in trees", where horse cannot run good - what did you say that i didn't?
and an elephant still counts in my advantage, because he has a heel bone and technically
has a full foot support, unlike dogs, cats, deer, pinhead.
every animal that runs well and on toes does it on
four legs. every animal that uses two legs and walks vertically goes on full feet, because otherwise he will have no balance.
creatures that climb don't walk on dog legs, because dog legs are for running.
predators walk vertically and like(d) to climb.
humans walk vertically and like(d) to climb.
that pinhead marvel predaturd at least in Neca's enterpretation has a vertical body with no tale for counterbalance, and he is not in running pose, he is in standing pose on a dogs legs - no heel bone behind the foot.
he won't be able to stand for long in this pose, or walk, or push/fight, just run, and probably for a very short time, like a dog on two legs.
you continue mentioning "fastest and nimble", i continue insisting that's possible only on four legs.
if in the end he walks on full feet with heel bones, both my argument against dog legs on a predator and yours against flat feet become invalid, of course