Daily exercise is a must for dogs of all shapes, sizes and ages. Finding a well made, durable leash that’s comfortable for both you and your pet is key to keeping your dog active and happy. Even if you have a large, fenced-in backyard, walking your pup around new places gives him a chance to explore and helps to socialize him to other humans and other dogs. While you may consider a leash a simple purchase, finding a leash that best suits your dog’s needs can be a tall order. Whether he’s a puller or a runner, we’ve sifted through the options and found the best products for every type of dog. 
The retractable dog leash is one of the most comfortable leashes for the dogs because they allow them to go as far as they want as long as the owner does not consider it a danger. Retractable leashes are usually made of nylon and the retractable device is made of plastic or a stronger composite. Although these leashes can be convenient for both the dog and the owner as it allows some control, they make it difficult to keep an aggressive dog under control which can result in persons or other dogs being attacked. Aggressive dogs should not be walked with such a leash, and puppies should be kept closely to ensure their protection from various dangers such as cars. Dogs with a tendency to bolt without warning should be walked with caution, as a retractable lead can allow the dog to accelerate to significant speed before being stopped suddenly presenting the possibility of injury to both dog and owner.[11]
Speaking of reward, positive reinforcement refers to operant conditioning, and I won’t bore you with the details right now, but suffice it to say B.F. Skinner, one of the leading researchers on reinforcement, found that positive reinforcement (to reward good behavior) is far more superior to punishment in altering undesirable behavior because positive reinforcement results in lasting behavioral modification, and punishment changes behavior only temporarily; and presents many detrimental side effects. If the problem behavior changes temporarily, it will reappear later, and it comes with even more problem behavior! Good Behavior = Reward and Bad Behavior = Punishment, does that sound familiar? Positive reinforcement training is what exotic animal trainers have used for years to teach dolphins, whales and large cats among other animals.  You cannot force a dolphin to do what it does not want to do!
Leashes are used on large animals—such as bovids, camelids, and equids—to lead them so that they will be forced to follow and come to a desired area—as well as to tether them to a specific area, such as to a fencepost or tree trunk, so that they will remain stationary and not run away. Oftentimes, leashes are used to tether such animals when they require separation, examination, or work to be done to them, such as grooming and tacking up.

Leather is a great option for a long-lasting, attractive leash, and the Leatherberg is the best one you can buy. At a great price (under $30), the Leatherberg is constructed from real cowhide leather with a zinc-alloy snap hook, and comes with a full one-year warranty for any reason. It’s made in both black and brown and measures six ft long, perfect for medium to large dogs. This leather leash is treated to stand up to the elements, and won’t attract dust and dog hair the way a nylon version might.
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