In honor of National Puppy Day, here are 25 things everyone should know about these very good four-legged snuggle buddies.

DOGS
Every year, billions of dollars in ancient artifacts and other cultural objects are looted and sold around the world. A new project is training dogs to sniff them out.
It's time you started washing these bacteria traps.
After years of dwindling popularity, the Queen’s favorite dog breed is making a comeback.
No. 1: You won't catch it from Fido.
It's not exactly reassuring news.
It comes down to theobromine, a chemical in chocolate that dogs can't metabolize as quickly as humans.
If Americans' 163 million dogs and cats constituted their own country, they'd rank fifth in global meat consumption.
These interspecies friendships prove that anybody can get along if they really put their minds to it.