Keratophagy is the consumption of part or all of a shed skin. Most of the time we see this in the herptile world it is cases of autokeratophagy, like when geckos eat their own skin.
However, I have discovered that my Tioman Island kukri, Oligodon purpurascens, thinks the sheds I throw in his cage for enrichment are actually snacks. I thought it was a fluke the first time I caught him doing it, but this series of pics is from the fourth occurrence of the behaviour.
These pics also give a great view of the modified rear-fangs that give the genus their name
