The owner, known on TikTok as @theythemtheo, took Arlo the border collie on an evening stroll ... put him in the same category as the "world's smartest dog breed." Border collies often top ...
The Border collie and Belgian malinois are sometimes labelled as the smartest of all dogs, but scientists have now found smaller breeds can hold their own. Brain capacity relative to body size is ...
Chihuahuas are among the smartest dogs because they have the biggest brains for their size, a study has found. The Border collie and Belgian malinois are sometimes labelled as the smartest of all ...