These pretty well known, enough to be easily recognized. Though the dogs that do not have the typical characteristics look more like wolves. These are bred by Chukchi tribes of Siberia and used to pull sleds. Though used domestically they have a wolf like look with double coat, erect ears and the tail that is heavily turned. They are smaller than the wolf and can weigh about 25 kgs or even lesser. They could have problems like epilepsy and retinal atrophy. You need to keep them really active to avoid problems.