I saw this on a site just now: "Bees, mosquito's and ants, oh my!"
It's an article title. The mind boggles. I tried to comment, to say "How could you possibly, in any way, in any sense on this good green world we call home, think that that apostrophe belonged there? How?" but it didn't let me without registering, so I shall nurse my pain in quiet. I mean, after I hit "Publish Post."