Here is one of the shots I managed to get during my visit. It's pretty difficult to get a clear shot, as I'm shooting through glass which is in front of fencing. The glass made nearly all my shots hazy and a pain to focus through. And the reflection from the glass was absolutely terrible. Plus I had to deal with the crowds.
The cub in this shot paused to look at the crowd before quickly going back to play with his brothers. It's not the clearest shot, but I figure it's better than nothing.