The eyes of the Alaskan Malamute are almond-shaped and are varied shades of brown; however, the darker eye is preferred. The median lifespan of 10.7 years measured in that survey is typical of a breed their size; however, this study had a sample size too small to be considered reliable and much anecdotal evidence suggests they have on average one of the longest lifespans of large dogs, up to 15 years. The major cause of death was cancer (36%).The most commonly reported health problems of Alaskan Malamutes, in the 2004 UK Kennel Club survey (based on a sample size of 64 dogs) were musculoskeletal (hip dysplasia), and hereditary cataracts.