Pegasi

6 limbs (4 legs and 2 wings)

Equine features, including hooves

Large round eyes; round pupils; dark iris; white sclera

Feathered wings present (upon hatching the foal is covered in down)

Lays soft white eggs in nests made of grass on high cliffs

Young are altricial

Diet consists largely of monocots such as grasses and sedges, and often includes plant families known to be toxic, such as Iridaceae (Irises), Araceae (Arums), Lilaceae (Lilies), Asparagaceae (Asparaguses), and Amaryllidaceae (Onions)

Have the ability to create a spring of water at will by striking the earth with their hoof

While alive they are able to pass freely between worlds and the Dark Realms beyond without dying (able to go to whichever dimension [besides Heaven] they want without dying)

Mane and tail like this