I have been bitten by a dog just as the owner said he doesn't bite, had a dog dig a hole by my rope bag and cover my just washed rope with dirt, had a dog pull the leader off the rock before the first pro, had dog knock rock from ledge\trail above onto us (black dog named Vader) Owners responce was he is learning .
Have seen one climber with leash and didty bag /set pro leash dog and take care of dog.
Are you coming to the crag to walk the dog or climb? I have dogs but I leave them at home when I go climbing!! Love dogs, had it with lame ass dog owners . When you come to the crag with your dog take care of it or someone is going to take care of you!! BTW I carry a baseball sized rock when coming late back to the car for that dog growling that doesn't bite