Amid rampant poaching of rhinoceroses, veterinarians in South Africa are working to expand their knowledge of the animals' anatomy so they can better treat those that survive attacks. "We know very little about rhinos. We treat them as a large horse," said veterinarian Katja Koeppel of the Johannesburg Zoo. Up to 60 rhinos survive attacks each year, estimates veterinarian Johan Marais, a University of Pretoria equine and wildlife surgeon, and South African officials say the number killed annually is rising.

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