Game mechanics, not fluff.Yeah, but some of em sure can bite.
I'm not saying that the animals can't bite. I'm just saying that they can't benefit from weapon-using classes. Which is part of the point of some of those classes, being able to customize what weapon you use (reach vs. high crit vs. access to certain feats, etc).
It would require a whole different subsystem just so the race can function in the various classes. That's too much work for just a race.
Again, game mechanics, not fluff. "Given animal senses" is going to mean +2 to Perception or something.Sure, you'd have plenty of limitations, but you'd also have some unique opportunities, especially given animal senses.