Feed them, you get alot of power. However it can get costly,i have a 4 star black horse, and it boosted power level by at least 150,000. and the price rises, guess what the money you get rises with that level of power needed to obtain the mount.Not only that but look at the limit of people able to by the mounts above leopard, for example only 3 more
can get the Rinoserus and my server is fairly new.