Talk:Cloudsdale/@comment-4754370-20120327051310/@comment-74.220.50.64-20130221034222

Allicorn's can't technically be considered a species because we don't know if they can reproduce fertile offspring. But we know unicorns/pegasi/earth ponies can all mate, and their offspring can mate. Also, there are no "common" Allicorns, and in the show they might address the 3 species being only common types of ponies, not royal ponies.