The leash or lead is used to connect the dog to the handler, lead the dog, as well as to control the dog in urban areas. Most communities have laws which prohibit dogs from running at large. They may be made of any material such as nylon, metal or leather. A six-foot length is commonly used for walking and in training classes, though leashes come in lengths both shorter and longer. A long line (also called a lunge line) can be 3 metres (ten feet) or more in length, and are often used to train the dog to come when called from a distance.
In the twentieth century, formalized dog training originated in military and police applications, and the methods used largely reflected the military approach to training humans. In the middle and late part of the century, however, more research into operant conditioning and positive reinforcement occurred as wild animal shows became more popular. Aquatic mammal trainers used clickers (a small box that makes a loud click when pushed on) to "mark" desired behavior, giving food as a reward. The change in training methods spread gradually into the world of dog training. Today many dog trainers rely heavily on positive reinforcement to teach new behaviors.
Slip collars (commonly called choke chain or check chains) are made of metal links or rolled material such as nylon or leather. A metal ring is at each end. Historically, slip collars have been used as a matter of course, mostly in North America and the UK. In the last few decades use of these collars has declined. Correctly used, the collar should make a quick clicking not zipping sound when quickly snapped and released to startle or get the attention of the dog and indicate to the handler that the technique was a swift jerk not a choke. The idea is not to strangle the dog, though this can happen if the collar is improperly used.
You can start training your dog before they're of age to compete. Begin by working on basic obedience and teach your puppy to sit, lie down, come, heel, and stay. Your puppy will also benefit from attending training classes where they will learn basic obedience and get used to working around lots of other dogs and people. Having your pet take and pass the AKC Good Citizen Test is a helpful step.
Agility first appeared in England in 1978, as essentially a half time show at Crufts. The creators based the demonstration on horse jumping competitions, intending to show off the dogs’ natural speed and agility. Dog owners and trainers looking for something new to do with their pets pricked up their ears and said, “Hey, MY dog could do that.” Thus the sport was born.
RutRoh is an English Sheep Dog, born Deaf.  He is a wonderful dog and family companion, however, being deaf and living in Dallas, his safety was one of the reason he was brought to us for training.   His owners didn't want to have restrict him to be on a leash all the time.  They wanted him to be able to run and play and have a way to communicate with him when he was not in view of them.
Last, basic obedience training isn’t just for dogs that compete in obedience, agility, or trick competitions. Obedience exercises are important for all dogs, especially high-energy breeds that need mental stimulation as well as physical exercise. Simple behaviors like sit, down, stay, come, and leave it are essential for a well-behaved pet. You can challenge your dog even more by teaching him more advanced behaviors like “go to place,” formal heeling, to roll over, etc. The old adage — a tired dog is a good dog — is not incorrect. However, a mentally and physically tired dog is even better.
The clicker is a small hand-held device that makes a distinct, short sound to mark a desired behavior. (See clicker training for a more detailed discussion of this methodology.) It has gained popularity in recent years as being a means of training that does not involve physically correcting the dog, though it may be used in conjunction with these methods.

Changing behavior takes time. You need to have realistic expectations about changing your dog’s behavior as well as how long it will take to change behaviors that you don’t like. Often behaviors which are “normal” doggie behaviors will take the most time such as barking, digging and jumping. You also need to consider how long your dog has rehearsed the behavior. For example, if you didn’t mind that your dog jumped up on people to say hi for the last seven years and now you decide that you don’t want him to do that anymore, that behavior will take a much longer time to undo than if you had addressed it when he was a pup. Remember it’s never too late to change the behavior some will just take longer than others.
RutRoh is an English Sheep Dog, born Deaf.  He is a wonderful dog and family companion, however, being deaf and living in Dallas, his safety was one of the reason he was brought to us for training.   His owners didn't want to have restrict him to be on a leash all the time.  They wanted him to be able to run and play and have a way to communicate with him when he was not in view of them.

It's a good idea to proof your dog's training in different locations to prepare it for distractions. Invite a few friends over to cheer on your dog so it gets used to a crowd. You might also want to go to a training center or find local trainers who also have the obstacles set up in their backyard. If your obstacles are portable, you could even take them to a park.

The best type of dog training for both you and your dog depends on the outcomes you hope to achieve. If you want your dog to learn agility training, go to someone who specializes in those techniques. Regardless of whether you want your dog to learn basic behavior or competitive-level tricks, the majority of dog training is actually about training the owner how to communicate with their dog. Most professional dog trainers agree that a model of training based on positive reinforcement breeds a happy, healthy, well-adjusted dog. The alternative to positive reinforcement training is using force or aggression techniques like physical punishment or shock-collar training to get the dog to do (or not do) a behavior. While the dog may learn how to behave as you direct, it is also learning to communicate with force and aggression, and will in turn use those behaviors on other dogs (or people) that are smaller or weaker than it is. Before signing up with a dog trainer, meet with the trainer and ask for references. Watch the trainer interact with your dog, and make sure they treat your dog with patience and firm kindness. Ask them questions about their training methods:
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