Dogs can smell when people are stressed, and it seems to make them feel downhearted. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. For the new ...

A dog's nose is a work of art, an organ that's evolved to be incredibly sensitive to a wide variety of odors. Dogs put their noses in all sorts of places, many of which we find disgusting or offensive ...

Learn how trained dogs smell subtle chemical signals linked to cancer in blood samples.