Bloodhounds Can Follow Scents That Are Days Old

Bloodhounds are the ultimate scent detectives, with a sense of smell so powerful it seems almost supernatural. Their long, droopy ears and wrinkled faces are not just for looks, they actually help trap scent particles and funnel them toward the nose. Bloodhounds can follow a trail that is days old and can distinguish between scents that are days or even weeks apart. Their tracking results are considered so accurate that they are legally admissible as evidence in criminal trials. A Bloodhound nose contains approximately 230 million scent receptors, and their tracking instinct is so strong that they will follow a scent for miles without giving up. They have been used for centuries to track missing persons, escaped prisoners, and lost children with remarkable success rates.