But some forms of affection could be bad for both you and your furry friend.
A recent report in the Archives of Oral Biology may make you think twice next time before you give your pooch a smooch.
During that innocent little kiss, you and your pet can exchange a harmful mouth of bacteria which can result in gum disease and tooth decay for both of you.
A significant number of dogs suffer from periodontitis -- an inflammatory disease of the mouth tissue -- even though only 5 percent will ever develop a cavity.
Last year, researchers took a look at dog owners in Japan and assessed the prevalence of 10 human periodontitis-related bacteria in their pets.
Most strains were detected, two with extremely high frequency.
They also analyzed an oral microbe normally found in dogs -- but not humans -- and discovered it in 16 percent of the pet parents.
And no surprise, those bacteria were found most in those who had close-contact relationships with their dogs.