Probably not what you want to hear, but I'd recommend finding a nice home for the mixed breed pup and buy a new pup from well bred proven field bloodlines. Lab, Chessie, Golden, etc., one of the popular retriever breeds, or even a GSP, which can work well as duck dog. You want a pup with FCs, AFCs, MHs, SHs, on the pedigree after the dogs' names. If all you see on the pedigree are CH's in front of the names on the pedigree, move on to the next litter, no matter how cute the pups are. You might be able to turn this pup into a hunting dog, but you are starting out with the odds stacked against you because you don't know how much lab you have. You are also starting 4 months behind schedule. You get pup at 8 weeks and start training at 8 weeks plus one day. Get that Wolters book and he tells you to get the pup at 49 days old....7 weeks, and training begins immediately. It's not serious stuff at that stage, obedience (OB) and fun retrieves, acclimating to decoys, acclimating to gunfire, crate training. But training begins as soon as pup arrives home.
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