"The paintings not only depict everyday aspects, such as hunting and rituals, but also show affectionate and social interactions, such as records of sexual acts, kisses, and hugs," ICMBio stated.

The first kiss? 50,000-year-old kiss painting found in Brazil's Serra da Capivara. (photo credit: Instagram, @icmbio) The first artistic record of a kiss by humanity may have been discovered in ...