James scoffs. "We supplement their salt licks. They have access to water and forage."
James draws blood from a sedated Kip. Results: extremely low serum B12, high methylmalonic acid. A cobalt deficiency confirmed.
Lena visits James’ lab. "Not rabies," she says. "Look at the behavior pattern—licking soil, head-pressing, lethargy. It’s not a pathogen. It’s a deficiency."
The invasive weed wasn’t just a botanical problem. It was causing a behavioral disease.
The sprawling, semi-arid savannah of the fictional "Kalo Game Reserve" in East Africa. A research station run by Dr. Lena Neema, a behavioral ecologist, and Dr. James Tembo, a wildlife veterinarian.
Lena stops him. "Rabies makes animals aggressive or uncoordinated, not… contemplative. This is different. Give me 48 hours."
A light goes on in James’ eyes. Cobalt is essential for ruminants—gut bacteria use it to synthesize Vitamin B12. Without B12, an animal becomes anemic, weak, and neurologically impaired. Head-pressing is a known sign of B12-related neuropathy in calves.
For three weeks, a young male impala nicknamed "Kip" has been acting strangely. Impalas are usually vigilant, graceful, and highly social. But Kip has been found alone, standing stock-still for hours on sun-baked termite mounds. He’s stopped grooming, lost weight, and ignores the alarm snorts of his fleeing herd. His head hangs low, and he occasionally rubs it violently against a bush.
She reviews older data: three other impalas showed similar isolation over the last two years. All recovered spontaneously after 2-4 weeks. All were males, aged 2-4 years.