If we're talking strictly about anthros (and not about feral becoming anthro):
1. Leomon (Digimon)
2. Monkian (ThunderCats 1985)
3. Byakko (Yu Yu Hakusho)
4. Bergamo (Dragon Ball Super)
5. Jackie the Jackal (Kim Possible)

This is assuming ferals aren't allowed, otherwise Leo/Kimba would be #1 and Kovu would be above Bergamo. And that's also not including videogame characters, like Panther Caroso and Tiny Tiger.