"Husky" is a label for northern sled dogs rather than one breed. In shelters it usually means a Siberian Husky or a Siberian mix, but it can also cover the Alaskan husky, a mixed racing type, or a dog with some Malamute in the family tree. They share erect ears, a thick double coat, a brush tail and sometimes striking blue or mismatched eyes.
Most adoptable huskies weigh roughly 35 to 70 pounds and were built to run all day in a team. Many are social, playful and talkative, but also independent, quick to dig under a fence and inclined to chase small animals. They shed heavily and handle heat poorly. Mixes vary a lot, so the dog in front of you may be calmer or more intense than the label suggests.