I'm a bit curious about this as well. We've driven up into mountains and back down a few times with Nikko, out of necessity, and our ears always pop, but he never seems phased by the pressure changes - no yawning, whining, waking up if he's asleep, etc. But dogs are good at hiding pain, so I don't really know. The only thing he usually does is time it so that he pukes about 2-5 minutes before we reach our destination, lol. I have no idea how he knows we're almost there, or why his poor carsick stomach decides that's the time to toss its cookies!!!
Lauren & Nikko |