A kiss (from Old English cyssan "to kiss," in turn from coss "a kiss," perhaps onomatopoeic) is the touching of the lips. The study of kissing is called philematology. Kissing is a learned behavior[citation needed], related to the grooming behavior seen between other animals. Many non-human primates also exhibit kissing behavior
20061220
Kiss
A kiss (from Old English cyssan "to kiss," in turn from coss "a kiss," perhaps onomatopoeic) is the touching of the lips. The study of kissing is called philematology. Kissing is a learned behavior[citation needed], related to the grooming behavior seen between other animals. Many non-human primates also exhibit kissing behavior
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