Have you ever noticed how picky dogs can be about who they sniff? It is a little odd, isn’t it? When dogs run into someone they have not ever met before, they may sniff away. Then, when they see someone they know, dogs may act bored and above sniffing that person!
Vet Street gets to the bottom of this conundrum with a few interesting possibilities about why this happens. Which sniff theory do you find the most plausible?