An evolutionary perspective is assumed in which human existence is seen as the outcome of a long process of development whose beginnings are lost in the distant past. (religion-online.org)
The microscopic larvae carried by mosquitoes are injected into dogs and cats during a bite and then begin a several month process of development into the adult form. (tampabayvets.net)
So you see, it is all a normal process of development and bonding. (easybabylife.com)