What equipment is commonly used by canine handlers during training?

Leashes and harnesses are essential pieces of equipment for canine handlers during training sessions. They serve multiple functions, such as providing control over the dog and ensuring safety for both the handler and the canine. A leash is critical for maintaining the dog's position and preventing them from running off, while a harness is useful for larger breeds or dogs that may pull; it allows for better control without causing harm to the dog.

Toys and blankets, while they can be helpful for creating a comfortable environment or rewarding the dog, are not primarily considered training equipment. Collars alone are not sufficient as they typically serve more for identification than for training purposes, and grooming tools, though important for the overall care of the dog, do not play a direct role in training. Thus, leashes and harnesses are the most relevant and practical tools used by handlers during canine training.