How dogs have such a strong sense of smell


Today’s Video of the Day comes from the American Chemical Society’s Reactions series and features a look at why dogs have such a great sense of smell.

It turns out that dogs have 220,000,000 olfactory receptors in their noses, allowing them to be excellent candidates for sniffing out bombs, drugs, and even diseases.

One trial found that dogs were able to detect prostate cancer in urine samples with an astounding 98% accuracy.

By Rory Arnold, Earth.com Staff Writer

Video Credit: American Chemical Society