Not all monsters have to be vicious do they? This is something I actually dreamed about, and thought might make a cool focus for an adventure. Maybe a friend or ally of the party has been poisoned by a rare and "incurable" venom, and finding one of these is the only way to save their life? Maybe one of these things escaped from a temple dedicated to the deity of healing (or even - duh, duh duh twist, the deity of poisons), and they want it back?
I dunno'. It's a squirrel...with tiny tooth like spines along its back that secrete anti-toxins...Do what you want with it.