pronghorn

hanka-antilooppi A North American mammal, Antilocapra americana, that resembles an antelope.
2002, National Research Council, Ecological Dynamics on Yellowstones Northern Range'', http://books.google.com.au/books?id=wMsuHITYO2oC&pg=PT159&dq=%22pronghorn%22%7C%22pronghorns%22&hl=en&sa=X&ei=mr1oU6f0FMv58QW6tIHYCg&redir_esc=yv=onepage&q=%22pronghorn%22%7C%22pronghorns%22&f=false unnumbered page,

If historical records are accurate, the current population of about 250 pronghorn in the northern range is less than 15% of that in the early 1900s (YNP 1997) (Figure 4–7).

When a pronghorn breaks into an easy, rocking canter (a 30 miles per hour pace that it can keep up indefinitely), the humerus swings back and forth over just a few inches with each stride. Only when a pronghorn stretches into a gallop does the humerus appear to be swinging freely, and then the hoof travels several yards with each stride.

For the 10-year period 1981-90 an additional 736 pronghorns were transplanted within the state.

During 1980-90, pronghorn occupied about 13.5 million acres in the Trans-Pecos, High Plains, Rolling Plains, and Edwards Plateau ecological regions.