Harmonelid
From Tardis Wiki, the free Doctor Who reference
Harmonelids originated in the Xoga system. They loved to share music. When necessary, they could rapidly accelerate the growth of their legs in order to help facilitate their escape. They were known to settle inside human ears. Though this wasn't harmful to fully mature humans, it was a risk to the young, whose ears could indeed be harmed. (DWAM: Earworm)
