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.
In Connecticut, dogs are not permitted to run at large except in the situation of hunting. Still, if the dog has vicious propensities and the owner still allows it to run at large and a person is bitten, the owner can be fined for up to $1,000 and is also liable for 6 months of prison unless the victim has abused the dog and provoked the harmful behavior.