My Tucker. So far, it's all been okay although he likes to look around a lot! It got us into trouble on the trail my first time out alone. He insisted we go right. I wasn't so sure. I didn't whoa him soon enough. We ended up on the holey side of the trail. His back foot went into a rabbit hole. He was calm as a cucumber. I paused for a bit and then said "Well, gues we better get out of this mess.. Let's go." He got us both out of there.