how do dogs know when someone is sick

Dog’s Sense of Smell: What Dogs Learn From Scent

Have you noticed how thoroughly your dog sniffs you when you return home after being away? With a dog’s sense of smell (10,000 to 100,000 times keener than humans), he can determine our mood, or if we’re ill. Disclosure: This post contains affiliate links. We receive a small commission on goods purchased via these links, […]