A shot of a water vole aka water rat of Wind in the Willows fame. He takes a pause from feeding on some pond weed to throw me a brief glance. Due to predation by mink I believe that this is one of, if not the rareest mammal in Britain. Taken in Surrey, UK in captivity.
Canon 1D MK2 Canon 300mm f2.8 L IS 1/640th F2.8 ISO 320