Little Miss Muddy Muzzle: Our cairn terriers are working terriers. They dig constantly outdoors to keep our home safe from voles and other woodland critters. (“Terrier” means “earth dog.”) Consequently, they often wear the badge of mud on their muzzles, as Brunhilde is doing here. Photo made Feb. 20, 2019. Nikon D500, AF-S DX Micro Nikkor 40mm f/2.8G, ƒ/3, 40mm (DX 60mm), 1/30th sec., ISO 1600.