Dog_ma
does the age of the dog matter?
I will say yes, with one caveat. Some dogs I have worked with since birth, literally. Those dogs who have been worked with since birth, were held in various positions since birth. For these dogs it is not "teaching", but rather developing a puppy's brain from the very beginning how natural being on your back or side as a position might be. That's exactly how my Shimmer and Gaci were raised, and to this day they are extremely comfortable being on their back. There just was never an issue, they know that being on the back is not a bad thing.
With a dog I didn't raise from birth, or that might not have had that early life experience, I would teach how to lay on their back. I would start by teaching them the position, and being comfortable in the position on their own, and then slowly build up to being restrained in that position. For most cases restraint wouldn't be necessary, as they would willingly stay there while I wanted them to, but restraint might be necessary for, say, a medical procedure, so I think all dogs DO need to learn how to tolerate restraint willingly, for their own comfort and safety. A lot of stress can be relieved when dogs learn that restraint is not a bad thing, and I accomplish that as though I would teach most other things.
I have worked with dogs in the boarding kennel where restraint was necessary, such as in grooming and nail clipping, etc, and you could tell the difference immediately between the dogs that understood it and those who did not, or had bad experiences with it. So much stress in dogs could be alleviated totally by the dogs having been taught how to accept restraint. I did, unfortunately, have to physically restrain some dogs on their back or side, or in my lap, and it's not fun, and I felt bad for having to do it, but much like working in a vet or a grooming shop, sometimes certain things need to be done and you simply don't have the time to teach them the behaviour to these dogs as you would your own dogs, as you have a variety of dogs to care for. But in everyday teaching, with people's own dogs, it all comes down to teaching.
Dog_ma
should the technique be used as preventative/standrad move, or done only on problem dog?
Well, I'm not sure what technique you are referring to. I don't alpha roll my dogs, but I do teach restraint and to lay quietly on the back. And I think all dogs would benefit from being comfortable in what I described above, and that all dogs should learn to lay on their back or side comfortably, and to accept restraint. if that makes sense to you! For problem dogs though, depending on the "problem", I would use as little restraint as possible. The more problematic the dog, the more careful you are in how you handle, or even touch, a dog, in my philosophy. Or,e more problematic the dog, the more gentle you are.
Dog_ma
how does a dog distinguish between a medical and non-medical pin? Is a pin less upsetting to a dog because its for his or her own good?
They don't, which is why I would find it important to teach my dogs how to do it, period, regardless of the reason it's done. Which is also why when we are at the vet's, my dogs can be restrained by total strangers with no problems at all (even Gaci, who doesn't like strangers, can be restrained easily and laid on her back), in variety of positions. Gaci had to do just this at the vet three days ago, when she was having her vulva examined as she has some vulvar issues. She found the slippery table a bit disconcerting at first, but once I eased her into a down and over, she relaxed.
I dont think it's any less or upsetting to a dog, though, when it's for the dog's own good. They don't get whether or not it's for their own good, so the goal would be to reduce stress from the outset to make it a normal thing for a dog to do.
I haven't had any issues with my guys because they grew up thinking that was a normal way to do things. But I've worked with many dogs that did not grow up that way, and I have found that by first teaching them the position, then teaching the restraint, in that order, it makes life easy for all involved. Sometimes you just have to restrain a dog for something, and it's good to know the dog will comply when it's needed, rather than stress the dog out if it is not used to being handled.
I'm not sure if that's what you are looking for, because again I don't think restraint and pinning are at all the same thing, I think the entire ideology behind them is different. To me, and my definition right now, restraint is simply holding the dog still/inhibiting movement, whereas pinning is a specific type of restraint, intended to stop an ongoing (unwanted) behaviour, and to attempt to communicate "I'm bigger than you, I'm in charge here" by the human. Does anybody use the two terms interchangeably? Perhaps discussing the differences between the two terms themselves would be educational.