Bloodhounds are a breed of dog known for their exceptional sense of smell and tracking abilities. They have long ears and loose skin, which helps them capture scent particles in the air. Originally bred for hunting, these dogs are now often used in search and rescue operations, as well as by law enforcement to track down missing persons or fugitives. These dogs are friendly and gentle, making them great companions. However, they require consistent training and socialization due to their strong instincts and independent nature. Bloodhounds are known for their persistence, often following a scent trail for hours, which showcases their remarkable tracking skills.