Got two collies, no probs with trying to eat the bike or anybody else. They both go well into the woods to poop ( like where bears sh1t). One runs infront and the other behind, been out in groups with no probs if you get a bit close to them they move well off the track, every dog is different see what they can and can’t learn from a few rides. If I fall off though the one will come and sit on me and the other just drops a Stick for me to throw, so much for “lassie go get help”