We had to be really quiet (I was proud of how quiet the kids were), and Andrew warned us to not stick anything out of the vehicle. He explained that the animals (like the lions, for instance) just see the vehicle as a big animal so won't attack it. However, if an arm was sticking out, it would probably be fair game. This is how we were able to get so close to animals without being in danger.
Unfortunately, it was getting dark, so even after playing with the settings on our camera, this is the best picture I could get. I decided not to share the 37 blurry photos I have of him :) You're welcome.
This ended the first drive of our safari. We had two evening game drives (from about 4:30 - 7:30), and two morning drives (from 6am to about 11am). This one just whetted our appetite for more.