I loved the one where the dog ripped the head off the rooster. That sounds like something my first Golden would have done. She was a very independent girl. After missing a few pheasants one day, she ran over to a rock wall, pulled a pheasant out, brought in over and dropped it about 10 yds in front of me. I think she was saying I might be able to hit one if it was that close. Another time a mallard was shot but only crippled. It landed in shallow water. The duck was hissing and snapping at her as she tired to grab it. She finally stopped, whacked it with her paw in the head then carried it back and dropped it behind me.
My male golden loved pheasant hunting, but if I missed several in a row, he would start walking behind me, basically stepping on my heels. It was very annoying, which I think was his point.
My current dog gets all excited when the birds come in. She can turn a complete circle watching geese and never move from her spot. When I shoot and miss she continues to stare out at the field as if she can't believe nothing fell, then go lay down and start ripping up a stick or corn stalk. When the geese are cripples and being nasty, she will pounce on them and shake the hell out of them before she drags them back. She weighs about 50 lbs and often looks smaller than the geese she is bring in.