Plural of bloodhound: a large dog breed with long ears and wrinkled skin, famous for their incredible sense of smell and ability to track people across long distances.
Combination of 'blood' (from Old English 'blod') and 'hound' (from Old English 'hund'). The 'blood' refers to the dog's use in hunting animals and tracking prey by blood scent, not the dog's appearance.
Bloodhounds have such sensitive noses that they can follow a scent trail over 300 hours old and miles away—they literally smell in three dimensions! Their droopy ears actually help by funneling scents toward their nose, showing how evolution fine-tunes hunting dogs.
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