Can bloodhounds be aggressive? Bloodhounds are not known for being aggressive. Instead, they are generally gentle and mild-mannered dogs who are friendly and patient with people, children, and other pets. As they are the number one scent dogs in the world, its no surprise that they will stick to a trail when they get a whiff of something. Do bloodhounds kill? It was prized for its ability to hunt the cold scent of an individual animal, and, though it did not usually take part in the kill ...