Jay Leno learned why it's never wise to work with animals on last night's 'Tonight Show.' During a segment with Julie Scardina, animal ambassador for SeaWorld, Busch Gardens and Discovery Cove, Leno had unfortunate encounters with several different critters.

First, Leno made faces at a caracal, a cat that ranges over parts of Asia and Africa, and got hissed at twice in response.

Then, a scarlet ibis roosted on Leno's head. "I feel like I'm at the royal wedding with one of those hats," he said.