Tunnels: There are a couple of different types of tunnels used in agility competition. One type is a tube with a U-shaped bend that is made of joined rigid hoops. Another style consists of a stiff collar-like tunnel, usually only a few feet long, that has a length of fabric fastened to one end. The dog goes in through the collar portion and must find its way out from under the collapsed fabric portion.
Feed your dog a high-quality diet with appropriate amounts of protein. If your dog spends most of his days lounging in your condo, don’t feed him food with a protein level that is ideal for dogs who herd sheep all day. The money that you will spend on feeding an appropriate quality food will often be money that you save in vet bills later on. I recommend you always check with your veterinarian for the right diet for your dog.
But wait, there’s more! Agility gives you something cool to do with your dog. This is important if you have a hard time getting your dog to do what you say. It teaches Fido that you are lots of fun and worth listening to. Compare this to another common activity for dogs: the dog park. At the dog park, you let him off leash and he goes off to do his own thing. Returning to you is no fun because it means he has to go home. You’re not Fido’s best buddy. You’re his chauffeur.
Martingale collars (also called limited-slip collars) are usually made of flat nylon with a smaller fixed-length section (made of either nylon or a short length of chain) that, when pulled on by the leash, shortens up tightening the collar around the dog's neck, to a limited extent. When properly fitted, martingales are looser than flat-buckle collars when not tightened, and less severely corrective than slip collars when tightened.