We take our pug and pittie both, every time we go. If you're approaching the parking lot, the entrance to the trail, on the left, is where we start. It's easier for us, and our dogs to climb up the rocks, using them as steps. If you start the other way, you have to go down down the rocks, and I find that more difficult with the dogs.
On a leash, yes. Though there is a steep cliff section they may struggle to traverse. I would suggest going in a counter-clockwise direction to do that part in the easier downhill direction.
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