Beagle vs West Highland White Terrier

A Beagle's nose runs the dog, not the owner — bred to follow a scent trail for miles regardless of what the handler wants, so unreliable off-leash recall is a breed trait, not a training failure, and a bored, under-exercised Beagle is one of the most vocal and destructive small breeds there is.

This breed carries roughly a one-in-four chance of developing lifelong itchy skin disease — about double the risk of the average dog — and it's also linked to an incurable, often fatal lung disease essentially unique to the breed that most sellers never bring up.