Ushna's Dog is a dog belonging to Ushnar gro-Shadborgob. He is smaller than all other dogs in-game, and can be found in his house in Crucible, New Sheoth. If the Hero is a Khajiit, Ushnar may order his dog to attack them, due to his fear of cats.
If Ushnar's dog is killed, he will respawn in two in-game days. If Ushnar himself is killed, his dog can be found outside of his house.