as far as the poo eating I just dont have the answers.try a higher protien diet with more fat and dont give any fruits or veggies they can force out the stuff theat needs to stay in the digestive tract witch is not being absorbed due to being pushed out to early.Just a guess.2. spray bottles coins in a can just need negative recognition.3.Same as number two4.More and better training.If a dog isnot trained almost constantly they will forget not completely but enough to not obey what you want them to do.5.what do you feed your dog...Mine get blue buffalo taste of the wild and solid gold,remember they need animal fat for energy and to build muscle they need protien,then excersize your dog as much as possiable.6.vizslas grow like any other dog physically but mentally it is a slow go.smart dog but it takes them a little while for the brain to develope.With all that energy it makes for a pretty fun package wouldnt you sayGood luck Duke and Rileys dad