Leave it Method of Training
How many times have we wanted to get our dog to "leave it"? I know I have, such as leaving a plate on the coffee table and coming back and half or all is gone. This video is awesome on teaching them to leave it. We have used similar methods and use an all natural "snack" for training of the dog, such as carrots, strawberry etc. Please think about the weight gain when you are teaching any schnauzer a new method. It is best to use something that will not cause weight gain or you can make your dog work for his own food and yes we have done this as well. They work for their food for the day. Also don't forget that Schnauzers love verbal praise. PRAISE PRAISE PRAISE as it is better than any treat on the market and it is free.
Dogs cannot "speak" to address how they really feel when they need to, such as around strangers or children. Here is a great picture that most dogs will show how they feel through body language. It is our job to learn the body language of our dogs before something bad happens. First rule would be learn your dog, not your dog learning you.