Please keep in mind some older dogs do not tolerate the stress of a group class very well. (awesomedawgs.com)
Sometimes dogs are getting in suffering and harming themselves only for a low - quality leash that does not tolerate the stress when the puppy becomes more excited. (dogguidereviews.com)
At a basic level, being able to tolerate some stress during exercise is essential to the activity and for its desired outcomes. (health.com)