It's also a day to promote saving the lives of puppies and educating people about the dangers of puppy mills.
National Puppy Day is considered an global holiday and has trended worldwide on Twitter every year from 2012 to 2015.
By the age of one, a puppy is considered to be an adult. But the origins of puppy day actually have some merit - as well as a little bark and bite.
Atlanta Humane Society serves about 25,000 animals each year, and places approximately 8,000 dogs and cats into forever homes. You will have to visit the SPCA of Niagara County for more details.
To celebrate, we at Go Knoxville are compiling readers' photos of their furry canine friends.
Craker added that it is always important to do your homework when you are planning to purchase or adopt a new dog.
Plus, the Humane Society or the SPCA in Tampa Bay may be able to help.
Did you know that all puppies mature at different ages? Those include brushing your puppy or getting them a brand new toy.