V̇O max has been measured in other animal species. During loaded swimming, mice had a V̇O max of around 140 mL/(kg·min). Thoroughbred horses had a V̇O max of around 193 mL/(kg·min) after 18 weeks of high-intensity training. Alaskan huskies running in the Iditarod Trail Sled Dog Race had V̇O max values as high as 240 mL/(kg·min). Estimated V̇O max for pronghorn antelopes was as high as 300 mL/(kg·min).