Back when I was guiding duck hunters, I thought my black lab "Shadow" to get all the birds out of the mud boat and bring them to the cleaning room. He would run back and forth bringing one bird at a time. He would pile them up on the shelve for me. The people were amazed by this. The little female lab I had after Shadow would do an amazing trick. Cajun and I would walk down the wharf at the camp and I would drop a one dollar bill. I would make her pick it up and tell her to bring it to whoever was watching. I would tell them to put their hand out and she would drop 4 guarters in their hand. That was a good dog.