Not necessarily in the MLP but could be? Dunno, figuring it out.
MLP AU Things to Know.
1. Most ponies lack Cutie Marks. Over time they seemed unnecessary and restricting and began to no longer appear on pony flanks.
2. With the high amounts of magic hybrid offspring are not rare.
3. Discord is a god of chaos, being a god like being he one day in the past randomly made a race based off him called Draconequus. This is usually a crazy chimera of parts race with low levels of chaos magic (mainly enough magic to have the body parts of multiple animals and produce offspring with random animal parts).