hi,am not much use for all your questions but the one with the pebble poos could be that she needs some pulped veg with her meals, not a lot, and you can adjust it according to her poo, too much and she will get the runs, not enough and she may be constipated. mine have firmer poos when they have chicken carcasses then when they have the raw meat. as for the pulling on the lead, my two pull more when they are out together so like you i assume its the leader thing.