I can Kinda see that one, I'm sure Inter-Species Dating would not be much of an issue in Equestria, or anywhere on the Ponies' Home Planet, for that manner, Im sure somewhere there are pony/Griffon, Griffon/Dragon , Pony/Dragon, Buffalo/Pony, Etc. Of course, as long as the pairs have an near-equal level of intelligence among them. with the exception of possibly a few bigots, who would object. Of course, there would be those as well who would not consider themselves dating a different species due to a lack of attraction, but they would most likely support or tolerate your decision anyways, eve