flyingacerp
asked:
My headcanon on the MLPverse is that before the Princesses Rule, Pegasi ate Fish for the protein. This keeping their muscles strong, yet aerodynamic. Even though it's a past tradition, Pegasi can still eat Fish today for the same benefits.

I’ve seen this headcanon before, and I love it.  This would be especially helpful for Pegasi along coastlines.  Real horses can eat meat in small amounts in cases of emergency, so it makes sense that bird-horses would do so if it is the more abundant food source.