I am after some help on stoping my dog playing with the bird on water retrieves. He does not do it on land but right from the start of my training he has rolled the bird in his his mouth in water. Up until now this has not been a problem but he has started letting it go, pushing it with his nose and when he gets to where he can touch the bottom he will pick it up and drop it a few times so it is sitting just right. He is a soft natured dog so in fixing the problem i don't want to creat another one as in bitting the bird.
. He is a 31/2 year old GSP trained to a competitive level in all age. Being my first dog when things like this come up I'm not sure what to do.