A common topic among the anthro community (and heck, DeviantArt at large) is the classification of what is anthro, what is furry, and what isn't. Heck, even well-established artists have a hard time explaining it, and to quote Scott Kurtz of PvP: "Cartoon animals don't have boobs!"
An often-offered definition of the difference between Anthro and Furry is that Furry is a sexualized form of Anthro, whereas Anthro is simply drawing animals acting like humans and sipping tea; ergo, Anthro is the 'true' art and standard of civilization, while Furry is its mentally retarded drooly cousin, mostly consisting of cub porn and recolored Sonic OC's.
This is the most widely accepted definition between Furry and Anthro. It's also dead wrong.
To help demonstrate this, I've made up a simple graph to make it clear what 'Anthro' is and what Furry isn't:
A brief explanation of the relevant bits so I'm not just repeating what's already written on the chart's deviation page: