I recently bought back a 7 month old blm that I sold as a 8 week old pup. The dog has a ton of go but had no training except is house broke and toys thrown for it. It goes crazy for bumpers but I took a wing clipped pidgeon and he wanted to bark at it and lay down beside it. Then a few days later I got him reved up and through a mallard for him and he runs out to it and wants to roll on it. I did get him to retrieve the duck from water but the next day on land he wanted to roll on it again. Just wandering how to proceed from here?