K-I-S-S-I-N-G

Opus and Winola, Brazilian Saki monkeys housed at the Prospect Park Zoo in New York City, share a kiss.

Displays of affection among primates are always so touching (except for those bonobos). Perhaps it is because we feel a particular kinship with our simian cousins. What human female wouldn't appreciate such attention and tenderness from her human male mate? What human male doesn't envy those cheek pads, hairy face, and thick mane?

Photo source: Yahoo! News