What unique physical feature helps Bloodhounds track scents effectively?

The story behind the answer

Bloodhounds’ long, pendulous ears sweep scent particles from the ground toward the nose, while their loose, wrinkled skin traps and concentrates odors around the face. This keeps a “scent cloud” close to their nostrils, allowing them to sample more odor with every sniff.

Paired with one of the most powerful canine noses (roughly 300 million scent receptors), these features make Bloodhounds legendary trackers, able to follow trails for days. Memory tip: picture a Bloodhound wearing a built-in “scent hood”—ears like brooms that sweep scent up, and skin folds like pockets that hold it—channeling everything to a super-sensitive nose.