The bacteria gets in their mouth and it sits there. It's nasty. But humans are not on their dinner list.

The mouth is not a sterile environment. It's teeming with bacteria, hundreds and hundreds of different kinds of bacteria.

You could also ask who’s in charge. Lots of people think, well, we’re humans; we’re the most intelligent and accomplished species; we’re in charge. Bacteria may have a different outlook: more bacteria live and work in one linear centimeter of your lower colon than all the humans who have ever lived. That’s what’s going on in your digestive tract right now. Are we in charge, or are we simply hosts for bacteria? It all depends on your outlook.

Their bite can snap a bone.

We try a special exhibit every year. We have fish here, but we have a lot of other animals, too. We talked about what would be interesting, and lizards came up.

That's about typical for a male.