Bloodhound

The bloodhound is a big, droopy-faced dog bred for its incredible sense of smell. Originally used to hunt animals like deer and rabbits, these dogs now help track missing people. Their tracking skills are so sharp they've been used since medieval times.

• They trace their ancestry to hounds from a Belgian abbey.
• French speakers call them 'Saint Hubert's dogs.'
• Their noses can follow trails days old.