Bloodhound

Their tracking ability is so trusted that their scent-trail identifications are legally admissible as evidence in American courts of law.

They can follow a scent trail that is more than 300 hours old which is a testament to their 300 million olfactory receptors.

The Bloodhound is the only animal whose testimony is admissible in a U.S. court of law.

The Bloodhound's ears are so long they can touch the ground when the dog is sniffing.

Bloodhound Tracking: A Bloodhound's sense of smell is so accurate it can be admitted as evidence in a court of law.