What Christian mentioned are the rules of the SHC and all assigned clubs which are members of the FCI
These rules are not for "sleddogs" only but for all dogs which are taking part on national/international races in Germany. All kind of dogs are starting in these competitions, not only "northern" dogs, but hunting dogs, runnig dogs etc.
Apart from the fact, that these rules make sense for these kind of competition, everyone of us has the opportunity to say no- my dog is not starting/continuing in a competition which can cause damage to the dog. We should be able to judge our dogs and their limits also. A well trained dog might have no problems at whatever temperature- a bad trained dog might have problems no matter how the temperature is like.
WE ARE RESPONSIBLE FOR OUR DOGS - not anyone else.
Wish you all a sunny day and a wonderful weekend.
Regards,
Kerstin