(Furries, if it's the same in Australia as Canada, are people who like to dress up like animals - it turns them on)

OP, I don't honestly think you're going to win this one. Fetishes are strong, driven desires. Nobody can just "give up" a fetish (that I'm aware of).

Do you live together? If he were to "contain it" - i.e. only engage in his fetishes in your absence, would that work for you? Or are you needing him to 100% do away with it all? Fetishes are actually quite normal - we all have them - some are just more "interesting" than others. If you are needing him to do away with them 100% you might be better moving on from the relationship, because he sounds pretty attached to them. If you can find a compromise where he can contain it in your presence there might be some hope.