Non-sexual grooming is a type of sexually-oriented behavior presented in animals as a non-reproductive sexual behavior .
Although easily confused by laypeople , autofellatio and oral sex are separate , sexually oriented behaviors , Auto-fellatio or oral sex in animals is documented in Darwin 's bark spiders , brown bears , These Bears Are Having Lots Of Oral Sex , And Scientists Think They Know Why ( The Huffington Post ) By : Grenoble , Ryan .
Non-reproductive sexual behavior in animals