Lab lady

Because your dog eats poo doesn't mean the diet is incorrect. Some just like doing it. If you add about 2 tablespoons of unsweetened pineapple juice to the meal it will stop them from eating the poo. Don't ask me why it works but it does.

I use carrots for my older girl when we are training, cut them up small and partially cook, don't have to worry about her getting to many extra kilojoules and she gets plenty of rewards. Also cook and blend them up with other veggies for my pups.

i agree with what GayleK said, but for the nipping i would use a very firm NO because it is a behaviour you want to stop forever. my dogs usually learn the hand signals before they really understand the words and you are right the word you use is of little importance as long as you use the same word and signal every time. good luck keep up the training