Pests — United States
The nilgai, a once-exotic antelope imported from Asia for zoos and let loose for trophy hunts on Texas ranches, is now being blamed for spreading the potentially devastating cattle fever tick the farthest into the United States interior in decades, possibly since it was declared eradicated in 1943.
The Laguna Atascosa National Wildlife Refuge in lower Cameron County, about 2 miles north of the Mexican border at the southernmost tip of Texas, is being called ground zero for infested nilgai
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