Dog cruelty is often defined as inflicting unnecessary pain and suffering on your dog(s).
Dog cruelty laws differ broadly from country to country, and indeed it even differs from county to county in the United States. Most dog cruelty laws pertain to extreme physical violence on the dog, resulting in serious wounds or even death.
What Is Dog Cruelty? - ponders Shiba Inu Sephy.
Another class of dog cruelty laws deal with extreme neglect by the dog owner. This includes failure to provide basic necessities to the dog including proper food, shelter, and veterinary care.
I think most of us can agree that these actions fall under dog cruelty. Sadly though, many dog owners still fail to provide even these very basic needs especially proper veterinary care.

Sometimes, a dog may have to go through pain or suffering as a result of health issues.
Sometimes, a dog may have to go through pain or suffering as a result of health issues. My Siberian Husky had to go through several painful surgeries when she was young because we were trying to straighten her crooked leg. Unfortunately, the procedure failed, and amputation was necessary.
Some people may consider having a 3-legged-dog selfish and cruel, because of quality of life issues. However, most 3-legged-dogs have just as good a quality of life as their four-legged brothers and sisters. In general, most people would not consider short term pain from medical treatment to be dog cruelty.
The question of dog cruelty becomes a lot more controversial when pain is applied in the context of dog training or dog behavior modification.

Reward training works better on my dogs.
You Say Dog Cruelty, I Say Dog Behavior Modification

Dog Cruelty - Reward based conditioning vs. Aversive based conditioning.
Dog behavior modification is commonly achieved through a process called conditioning. There is reward based conditioning and aversive based conditioning.
In aversive based conditioning, you apply a negative stimulus to discourage bad dog behaviors, and remove the negative stimulus, to encourage good dog behaviors. For example, if your dog pulls, you may apply a leash jerk. As soon as he stops pulling, you stop applying the leash corrections.
Not all aversive dog training methods are pain based.
Sometimes an unpleasant sound or an unpleasant smell may be used to deter chewing or jumping. When it comes to dog cruelty, however, most of the controversy is centered around pain based aversive methods (leash jerks, muzzle slaps, finger pokes) and pain based aversive equipment (electronic/shock collar, choke chains, prong collar).
Are Aversive Methods Cruel to Dogs?
Dog cruelty is the act of inflicting unnecessary pain and suffering on your dog.
People who oppose the use of aversive methods argue that it is dog cruelty because it inflicts unnecessary pain on the dog.
Dog behavior modification, they say, can be achieved more effectively and more successfully with reward based conditioning.
People who support the use of aversive methods argue that the techniques do not really cause any pain to the dog, but is just a form of communication. It is only used to snap the dog out of his current bad/ rear-brained state, back into a calm state where he is able to listen and communicate with his human counterpart.

Are Aversive Dog Training Methods Cruel to Dogs?
Do Aversive Methods Cause Pain?
Let us consider the experiments upon which aversive methods are based.
In the Skinner box experiment, a loud/unpleasant noise is applied until a caged rat performs the target behavior. When the target behavior is performed, the noise stops. In essence, the rat performs the behavior to avoid the loud noise.
To be effective, the loud noise must be loud enough so that it triggers an “aversive response” in the rat, thereby giving him the motivation to do what we want him to do.
Aversive methods work because they deliver an unpleasant stimulus to our dogs.

Are aversive dog training techniques a form of communication?

Dog Cruelty - Do dogs cause pain to each other from wrestling and playing?
Are aversive methods a form of communication?
Yes, in the sense that they communicate to the dog, “Do this, or else”.
Do aversive methods deliver pain?
Yes, some of them do, including leash jerks, muzzle slaps, and finger pokes. These techniques work when you deliver the right amount of pain to the dog thereby causing an aversive response. Too much pain will cause the dog to break down, and too little pain will not provide sufficient motivation.
Different dogs have different temperaments, therefore the right amount of pain will vary by dog.
Do aversive methods get the attention of your dog?
Yes they do, through the delivery of an unpleasant stimulus (e.g. pain).
Aversive methods are always unpleasant for the dog. If they were not unpleasant, they would not work. Saying that an aversive method is only for communication, is untrue.
Don’t dogs sometimes cause more pain to each other, especially in a dog fight?
In a dog fight, yes they do. That does not mean we should emulate them in this regard.
During play, dogs rarely cause each other pain or harm because they have very accurate control of the force and location of their bite. Causing pain to their dog friends usually stops play, so dogs are highly motivated to play nice.
Even though a play session may involve growling and a lot of wrestling, there is little to no pain inflicted at the end of the day.
Dogs who are under-socialized may potentially be dangerous because they are unfamiliar with controlling the force and placement of their bite. This may cause them to inadvertently harm people and other dogs.

Dog cruelty - During play, dogs rarely cause each other pain or harm.
Are Aversive Methods Cruel?
Based on the dog cruelty definition, aversive methods are only cruel if they inflict unnecessary pain on your dog.
What is necessary pain?
Performing surgery on a dog causes necessary pain. The surgical procedure causes short-term pain, but it will frequently increase the long-term quality of life for the dog.
If aversive methods can be effectively used for the short-term, to bring about an increase in long-term quality of life, then it is not so different from the case of surgery.
However, this is almost never the case.
It is best to explore all other avenues of training first (i.e. reward dog training), before resorting to pain based behavior modification methods which are usually risky, difficult to implement, and only effective in very limited situations.
Ultimately, the question of whether aversive methods are a form of dog cruelty is a moral judgment. As such, it is something that each individual must decide for themselves, based on their own values and system of morality.
Should I Use Aversive Methods?
Like many people, I started out with aversive methods because it was recommended to me by others. In my case, it was my breeder, and my first vet technician. Both of them recommended alpha rolls and both of them recommended that I follow Cesar Millan, The Dog Whisperer’s more aversive dog behavior modification techniques.
Aversive methods worked well for me initially. However, after several weeks, I was almost always applying aversive corrections on my dog, and his behavior was actually getting worse rather than improving. I started having doubts about the long-term effectiveness of these methods and decided to explore reward dog training instead.

fter switching to only reward dog training, things improved significantly with my dog.

After *stopping* aversive training methods, Shiba Inu Sephy started misbehaving less, stopped being aggressive towards me, and began to trust me more.
After switching to only reward dog training, things improved significantly with my dog. He started misbehaving less, he became less aggressive towards me, and he began to trust me more.
In many ways, whether aversive methods are considered dog cruelty or not is a moot point.
What matters most is providing a good quality of life for your dog, and building a good and healthy relationship. I strongly believe that this can be most effectively achieved through reward behavior modification.
It has worked very well for me and my dogs.

Whether aversive methods are considered dog cruelty or not is a moot point because they are risky and less effective than reward training methods.
Thanks for the link Mike. Very good article with great references to scientific studies.
This link has some interesting information about ‘aversive training techniques’(with points backed up by published scientific research):
http://www.dogwelfarecampaign.org/implications-of-