Scientific name:
Erethizon dorsatum

Natural spread:
America

the North American Urson is the most known type from the family of the Baumstachler restricted to America. it gains a total-length of over 90 cm and can become heavy more than 10 kg. its thick ones, is partially hidden under the long, stiff deck-hairs with small barbs of equipped thorns.

Way of life The night-active Urson lived in originally only forest-areas. Today, it is to be also found more and more in the culture-landscape, however. How Baumstachler finished, it moves slowly, climbs very well and certainly on that occasion, however. In the trees, it finds also its food, that primarily consists of leaves and bark. Since it changes its feed-trees only unwillingly in the winter, entrindet it these often generally, that they perish. its Nagebedürfnis is very strongly distinctive. So it is guaranteed that it brought durchnagt and even wood-houses to glass to the collapse through eroding the posts.

The Urson lives usually individually in Erdbauten, splits or tree-caves. it marks its solid changes and its feed-trees with the strongly smelling urine. Also the female becomes before the copulation of the male over and over with urine sprays. Usually, only 1 young were born. It already is far developed and has a birth-weight of 1,5 kg. The Tragzeit also is extremely long with approximately 210 days.

The thorns of the Ursons can become very dangerous for an opponent. With danger, it lashes out bestachelten tail strongly at the enemy with its oberseits like with a club. The thorns bury themselves into the musculature of the aggressor and penetrate more and more deeply with every movement. This way they put back 2-3 cm on the day and can through-hike through the body downright. Despite this protection-appliance, however, the Urson becomes from pumas, lynxes, martens, foxes and wolves carries off.

Continuance Ursons are frequent in its spread-area.