Among a community that loves catgirls, and other anthropomorphic art it's probably hard to judge when it's "too far" based on features. I think the best way to go is by judging the artistic intent. This one probably got the benefit of the doubt since Xavier Houssin is established in the Danbooru archives.
Theres a big difference between Furry porn (which would diffenetly get deleted) and something artisticly good such as a group of 5-6 characters where maybe only 1-2 of them would actually be "Furries". Hence, why we even have a Furry tag anyway. Fox and Falco would be furries and theres plenty of super smash bro's pics.