The Picts never left any carvings of squirrels, so I studied photographs of red squirrels, a guide to draw such animals and an image in my mind of how a Pict might carve such a creature (Design © Hatch, Burn, Carve/Martin Wilson).
I carved the Pictish squirrel from a rough, reclaimed roof slate (complete with nails holes).
HATCH BURN CARVE 