Here Miska teaches her puppies how to tug. While many people used to think that tugging with a dog was 'bad' because it would encourage aggression, we know differently these days! Of course, the game of tug has to be under the human's control. Here's a good answer to the question of will tugging make my dog aggressive from another one of my favourite and respected animal behaviourists, Dr. Ian Dunbar: http://dogtime.com/tug-of-war-with-dog-dunbar-faq.htm . In fact, it's absolutely critical to develop tug drive or toy drive if you plan on doing agility. Here's a link to a great article on creating a motivating toy from one of the world's top agility trainers, Susan Garrett, who happens to live practically next door to me (well, about 1 hour drive) and if you don't know about Susan Garrett and her training, you should check out her blog and her website. And from Susan, here is a list of over 60 tug toy ideas.