Conditioning is certainly important for heat tolerance. Many trialers also clip their dogs for summer training and early fall stakes. I don't find the SM particularly heat tolerant. Their coat is too heavy. My setters have rather short coats and they don't have a lot of undercoat. Other than feathering (furnishings), their coats are not much more than a pointer. Certainly not a coat for cold water work. When they are running they make heat to keep warm, but sitting around in the cold is not for them. There is a reason that the pointer is king in the south. I have read of heat tolerant dogs running in one hour horseback stakes in temperatures of over 90 degrees and not stopping for water. That would kill a lab if it could even keep up such a pace. Heat tolerance is an interesting subject. The key factor seems to be keeping the temperature in the brain at less than 105 to 106. Core body temperatures can go higher without organ failure. I think the circulation to the brain has a heat exchanger arrangement so returning venous blood picks up heat from the arterial blood in the carotid arteries. Hence brain temperatures can remain less than body temperatures. You have to be real careful in warm conditions because a driven dog may not have enough sense to quit before it gets itself into trouble. I heard of a trialer that lost a dog that ran itself into heat stroke and was found dead lying by a puddle.Jagerherzen wrote: I think heat tolerance as a whole is a weakness of most versatiles. Less in the SM because of size? Maybe according to a bioscientic analysis, but a well-conditioned dog can withstand the heat better so that there may be very little (some, but very little) perceptable difference when you get down to it.
I have never had to carry a dog out, and would probably use a slider/sled anyway, much like carrying out a deer.
I do pick up my dogs and carry them a bit when whoa and steadiness training and all of my 110 lbs manages that ok.
110 lbs Eh! Well youth helps.
Solon