some first retrieves are more work than others
And Tom - love the egg trick - I had a friend many years ago that raised a hunting line of Golden Retrievers. He used to give one dog a raw egg, and Trieve would jump up on the kitchen counter and go out the window, then run around to the back door up a few steps and give the egg back. I had one of that dog's double grandaughters, my kids would give her glass Christmas ornament with the hook on it and she would take it across the livingroom and deliver it to another kid to hang on the tree. She never cracked one.
with my current pair of setters - the older one is a very reliable retriever but he doesn't want the younger one to steal his retrieve so he can somehow get a very firm grip on a bird with out leaving a tooth mark.