Tauros and Bouffalant shouldn't be evolutions. There stats are similar and they look pretty alike.Pinsir, Heracross, Delibird, Skarmory, Dunsparce, Corsola, and almost every other Pokemon that is not legendary, save for a select few. I always thought Tauros and Bouffalant would be evolutions same with Luvdisc and Alomomola. Maybe in gen 6 Tauros will get an evolution and then that will evolve into Bouffalant. Same with Luvdisc/ Alomomola.