The puppy we fostered did alot of drooling. But only in the crate when DH drove her between home and work. I mean when they came home Friday, she was wet, her chin, her legs, and tummy. I thought she had an accident but she didn't. Come to find out today it's from being carsick. I guess they drool trying not to throw up! I never knew that! I'm probably the last to know these things, but I'd thought I'd share anyway.