Scent hound

Most of them tend to have long, drooping ears and large nasal cavities to enhance smell sensitivity.

They need to have relatively high endurance to be able to keep track of scent over long distances and rough terrain.

One theory says that this trait helps to collect scent from the air and keep it near the dog's face and nose.

[3] Most scent hounds have a range of vocalizations, which can vary depending upon the situation the dog finds itself in.

As they are bred to "give voice" when excited, scent hounds may bark much more frequently than other dog breeds.

The Fédération Cynologique Internationale (FCI) places scent hounds into their classification "Group 6".

Genetic studies indicate that the scent hounds are more closely related to each other than they are with other branches on the dog family tree.

The second category is referred to as Trailing Scenthounds, and includes dogs used for tracking of humans, reputedly descended from the St. Hubert Hounds.