Dogs have always been called "man's best friend", but it turns out that many of them are also "baby's best friend"!

Meet Jaden (the baby) and Sadie (the dog) two best friends who just love hanging out.

Now, my guess would be that little Jaden probably has some sort of food on her hand to encourage the vigorous licking, but maybe sweet Sadie just wanted to give her kisses?

It's hard to say, either way, this is an adorable video that really shows the great bond that dogs can form with kids of all ages.

And Sadie's laughter is pretty darn contagious.