FurAffinity - Fur Affinity, the internet's largest online furry art community.
DeviantArt - deviantART was created to entertain, inspire, and empower the artist in all of us.
Brush Ninja - Hand-drawn Animated Gif Creator
ArtStation - ArtStation is the leading showcase platform for games, film, media & entertainment artists.
pixiv - pixiv is an illustration community service where you can post and enjoy creative work. A large variety of work is uploaded, and user-organized contests are frequently held as well.
The Artling - The Artling is an all-in-one curated online artwork gallery that has been providing people from across the globe with unique designs.