Horace is well-versed in skull peeler lore! Skull peelers, despite their ferocious and well-deserved moniker, are considered by many to be downright adorable, especially when viewed from a safe distance. Their soft, dappled brown fur helps them hide in forest canopies, and they have shimmering insectile wings and big eyes that draw in the faintest beams of light. At first glance, a skull peeler looks like a cuddly pet or a wizard's familiar. Any illusions of domesticating such a beast are quickly dismissed upon seeing how a skull peeler eats, however.
Skull peelers have evolved to hang motionlessly in treetop canopies as they wait until appropriate prey appears, usually long-necked dinosaurs but also brachiating primates and large birds. The skull peeler then lashes out with its long tongue, severing the creature's head from its body and pulling the detached cranium back into its hungry paws. It then uses its claws to crack open the cranial cavity—hence its name—before lapping up the tasty insides.
Despite skull peelers' gruesome eating habits, some enterprises and individuals can't resist the urge to add these beasts to their menageries. Fey and other creatures with ties to the First World, such as gnomes, can occasionally coax a skull peeler into a form of domestication. While the adorable beasts can never be fully tamed due to their hyper-evolved hunting instincts, they can be bribed with food and, if kept satiated, displayed on a perch or indoor terrarium as an example of their master's cunning and deadliness.
Aphigenia doesn't seem like the bloodthirsty type, however. It's more likely that she's completely oblivious to her pet's true nature.
OOC:
Instead of the Nature check, you can instead try to convince Aphigenia that her pet is dangerous with a DC 34 Diplomacy check. Horace's critical success on the Lore check grants a +2 circumstance bonus on either the Diplomacy or the Nature check.