The article "Top 10: Biggest Dog Breeds in the World" from BBC Science Focus lists some of the largest dog breeds, discussing their sizes, temperaments, and roles. From Great Danes to Saint Bernards, these massive canines require special care but are also known for their loyalty and companionship.

The article "What Do Mountain Rescue Search Dogs Actually Smell?" from BBC Science Focus explains how tracking dogs use their powerful sense of smell to locate individuals. With millions of olfactory receptors, these dogs can detect skin cells, sweat, body odor, and other particles, helping them find people even in large areas.