A plump pigeon perches on your shoulder, feathers slick gray with iridescent purple-green sheen. Beady red-ringed eyes dart, sharp beak pecks curiously, taloned feet grip tight, scattering dusty dander and faint city grit across your skin.
Capricious Fey spirits incarnated into bodies reminiscent of normal pests, vermin familiars serve spellcasters and especially vermin hags. While they are most often drawn to serve wicked masters, they also delight in playing the part of dutiful servants to corrupt spellcasters who aren’t evil.
Vermin familiars are gripped by deep-seated fears shared by the vermin forms they inhabit, and as such, are terrified of dogs and other canines.