"I love the fact that human genomes can be found in only about 10 percent of all the cells that occupy the mundane space I call my body; the other 90 percent are filled with the genomes of bacteria, fungi, protisis, and such, some of which play in a symphony necessary to my being alive at all, and some of which are hitching a ride and doing the rest of me, of us, no harm. I am vastly outnumbered by my tiny companions."

Donna Haraway, When Species Meet

Demodex may have been spread by pets but we all have many of these on our faces

Hair Follicle mite