CGSociety and DeviantArt mainly. DeviantArt because that's where everyone asks, and CGSociety because that's my main online community. (It's not just 3D stuff. they have a thriving vis dev community, and it's a more mature audience than ConceptArt.org).
As for a clean animal/anthropomorphic focused gallery, I have not been able to find one. I don't think it exist, a fact that to this day blows my mind, and regrettably reinforces the furry stereotype way too effectively, especially in our industry.