homo erotic love paintings kiss happy colorful pictures
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Uploaded by raphaelperez on Aug 25, 2009
homo erotic love paintings kiss happy colorful pictures
Anthropologists have not reached a conclusion as to whether kissing is learned or a behavior from instinct. It may be related to grooming behavior also seen between other animals, or arising as a result of mothers premasticating food for their children.[1]
Kissing allows prospective mates to taste and smell each other's pheromones for biological compatibility. Women are subconsciously more attracted to men whose major histocompatibility complex portion of their genome is different from their own, leading to offspring with resistance to a greater number of diseases due to heterosis, and thus having a better chance of survival.[2] [3] [4]
Non-human primates also exhibit kissing behavior.[5] Dogs, cats, birds and other animals display licking and grooming behavior among themselves, but also towards humans or other species. This is sometimes interpreted by observers as a type of kissing.
[edit] The physiology of kissing
Kissing is a complex behavior that requires significant muscular coordination; a total of thirty-four facial muscles and 112 postural muscles are used during a kiss.[6][7] The most important muscle involved is the orbicularis oris muscle, which is used to pucker the lips and informally known as the kissing muscle.[citation needed] In the case of the French kiss, the tongue is also an important part. Lips have many nerve endings so they are sensitive to touch and bite.[8]
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Buttfuked: Tonay.
cuttock 10 months ago
Why is it always 2 guys (sick)
dyckandy 1 year ago
your work is beautiful... *****
thedancetuber 2 years ago