Hound is a label for a family of hunting dogs, not a single breed. Scent hounds like Beagles, Coonhounds and Foxhounds follow a trail with their noses, while sighthounds like Greyhounds and Whippets work by sight and speed. On adoption listings, a Hound is usually a scent-hound mix with long ears, a short coat and a big voice, often between 20 and 70 pounds.
Most are friendly with people and other dogs, and happiest with their noses to the ground, which suits a city of wooded parks and hillside streets. The same instinct means wandering after a squirrel or deer scent, howling, and treating training as a negotiation. Because ancestry varies so much, a listing's notes on size, energy and voice say more than the label.