|
Family: Bovidae, Subfamily: Caprinae, Genus: Oreamnos, Species: Americanus
There is only one species in the Genus Oreamnos, that of the Mountain Goat which is a large hoofed mammal endemic to North America. A subalpine to alpine species, it is a sure-footed climber commonly seen on cliffs and ice.
Despite its vernacular name, it is not a member of Capra, the genus that includes all other goats, such as the wild goat, Capra aegagrus, from which the domestic goat is derived.
Both billy (male) and nanny (female) mountain goats have beards, short tails, and long black horns, 6 to 11 inches in length, which contain yearly growth rings.
Size of Mountain Goats
A billy stands about 3.3 feet tall at the shoulder and often weighs up to 30 percent more than the nanny. Mountain goats can weigh between 100 and 309 pounds, and in most cases, a billy will weigh less than 180 pounds.
The head-and-body length also varies much, 47 inches to 70 inches with a small tail adding about 4 to 8 inches.
The billy goats also have longer horns and longer beards than nanny.
Wool Coats
The white double coats protect them from the elements. The fine, dense wool of their undercoats is covered by an outer layer of longer, hollow hairs.
Mountain goats molt in spring by rubbing against rocks and trees, with the adult billies shedding their extra wool first and the pregnant nannies shedding last. Their coats help them to withstand winter temperatures as low as -50 degrees F and winds of up to 100 miles per hour.
Although mountain goats have never been domesticated and commercialized for their wool, pre-Columbian indigenous peoples of the Pacific Northwest Coast did incorporate their wool into their weaving by collecting spring moulted wool left by wild goats.
Climbing
The feet of the mountain goat are well-suited for climbing steep, rocky slopes with pitches exceeding 60 degrees, with inner pads that provide traction and cloven hooves that can spread apart.
The tips of their feet have sharp dewclaws that keep them from slipping.
Also, the mountain goats have powerful shoulder and neck muscles that help propel them up steep slopes.
|