Kathmandu – In March 2025, a Bengal tiger followed a trail through Nepal’s Khata Corridor and paused at a small iron stake fitted with a dispenser. The device released a laboratory-made chemical that mimics the scent marks big cats leave to claim territory. Camera footage showed the animal investigate the odor and then turn back, one of several recorded instances of tigers and leopards reversing course at these stations.
Early Observations from the Khata Corridor
The setup forms part of a pilot project that draws on the same principle recently explored in Botswana. Researchers positioned the dispensers along paths that big cats commonly use near buffer-zone settlements. The goal is to create an artificial boundary that encourages predators to avoid areas with livestock and farms. ([1])
Footage from the corridor has captured multiple animals stopping at the stations. In some cases the cats lingered briefly before retreating the way they came. These reactions suggest the synthetic scent can influence movement, at least in the short term and under controlled conditions.
How the Artificial Markers Are Designed
The dispensers contain a synthetic version of compounds found in the urine and glandular secretions that tigers, leopards, and snow leopards use for communication. By replicating these signals, the stations aim to signal that a stretch of habitat is already claimed. The approach relies on the animals’ natural territorial instincts rather than physical barriers or deterrents such as lights or electric fencing.
Placement focuses on narrow trails and known movement corridors where conflicts have occurred in the past. The devices are low-profile and require minimal maintenance, making them practical for remote forest edges. Early results indicate the scent can prompt an immediate behavioral response, though longer-term effects remain under study.
Important Limits and Next Questions
Wildlife veterinarian Martin Gilbert, who helped introduce the method to Nepal, stressed that a tiger turning away from one station does not prove the technique will stop livestock attacks. “It’s a long way from proving that – and we don’t claim otherwise,” he said. “At this stage, we’re asking a more fundamental question: Can these compounds reliably alter a predator’s behavior?”
Communities in Nepal’s buffer zones already combine electric fences, flashing lights, and other tools to protect animals and crops. The scent stations are being evaluated as a possible addition rather than a replacement. Researchers note that success will depend on factors such as scent persistence, placement density, and how individual cats respond over weeks or months.
Looking Ahead for Human-Wildlife Coexistence
The Nepal trial builds on earlier work in Botswana and forms part of a broader effort to find non-lethal ways to reduce conflict. If the compounds prove consistent in altering movement patterns, the method could offer a low-impact option for areas where traditional fencing is impractical. Continued monitoring will determine whether the early camera-trap observations translate into measurable reductions in encounters near settlements.
