Not a whole lot. Usually after they just saved each other they get that way, but sometimes they just are.

Tough Cheetara said Tygra was really funny when he accidentally drank the love potion Lion-O wanted to give to Pumyra. It made him love everything and act all goofy. [giggles a little]

I wasn't there for that, though. Kat and I were still back in the Dog City when that happened, so Cheetara had to tell us about it.