Hi, I am looking to start Schutzhund for the first time. Just wondering what some of you vets do to imprint your pups in the first few months to a year of their lives. I have seen some videos where you just throw a ball against a wall and have your pup retrieve it, I have seen people use flirt poles and milk cartons with coins inside and of coarse the puppy bite sleeve. I know some of you have some other cool methods you use to help imprint your pups getting them ready for different dog sports. Please share.