Oh animals are pretty darn smart in some of the tricks they pull in order to reproduce (or avoid it). I was watching a show the other day on squid. This huge male had a female squid basically trapped in a cave she'd retreated into. He was so busy flashing his colors and watching for other big male squid that he missed, or ignored, what appeared to be another small female slipping by him to cuddle in with "his" female in her cave.

Well it turns out the other female was in fact a very tricky, smaller male who flashed "female" colors and basically acted like a lil harmless female squid...while it snuck in and did the deed with this male's prize female. LOL Who knew squid were so tricky!