An uncanny ability to witness animal sex

Sometime in the past year, Kris and I were at the Indianapolis Zoo and came upon a male zebra (very well endowed!) mounting a female zebra. It actually seemed sort of traumatic, but that's just nature I guess. The best part of that was the horror on the face of a mother of a toddler standing near us. Her child is undoubtedly scarred for life! Anyhow, that was that and we thought we were just lucky (or unlucky) to happen upon that scene. Then there was today. We were at the Como Zoo here in St. Paul ( a great free zoo, unlike to $15 fee you'll pay in Indy). We were watching a male and a female lion, who as usual were very chill and not too concerned to do anything exciting for us onlookers. Or so we thought. Suddenly the female got up and started nudging on the male. They proceeded to play around a little bit (foreplay I guess) and then, before we knew it, they were going for the gold. After the show was over, some of us onlookers clapped, drawing nasty looks from some of the mothers with young children (chill out people!). Both the lions lit up cigarettes and that was that ;-). But the question is, are we just very lucky? Or is it our mojo that draws out the best in all of us? Hmmm.....