Electric Fences and Pangolin Deaths in South Africa
Electric fences are woven into the South African landscape. Game reserves, cattle farms, private smallholdings and suburban plots all rely on them to control animal movement and deter intruders. For most wildlife, the experience of touching an electric fence is briefly painful and instantly educational. The animal recoils, learns the boundary, and moves on. For the ground pangolin (Smutsia temminckii), the encounter is far more likely to be fatal. Electric fence mortality is now recognised as one of the most significant human-caused threats facing pangolins across southern Africa, yet it receives a fraction of the media attention given to poaching.
Why Pangolins Cannot Escape the Shock
To understand why electric fences kill pangolins at such disproportionate rates, you need to understand the pangolin's primary defence mechanism. When threatened, a pangolin does not flee. It curls into a tight ball, tucking its head beneath the overlapping rear scales, and holds that position until the danger has passed. This strategy defeats most predators. Lions have been filmed wrestling with curled pangolins for several minutes before giving up. Hyenas occasionally manage to prize them open, but the ball defence succeeds more often than it fails.
The problem is that a pangolin does not distinguish between a predator and a fence wire. When a foraging pangolin contacts an electrified strand at ground level, the instinctive response is to curl. The pangolin wraps its body around the wire. Scales, being keratin, are poor conductors, but the soft skin between the scales and around the face and underside makes contact with the wire. Unlike a cow or an impala that receives a shock and jumps back, the curled pangolin maintains prolonged contact with the energised conductor. The current flows continuously. Depending on the energiser output, death from cardiac arrest or severe burns occurs within seconds to minutes. The pangolin is found the next morning, still curled, dead on the fence line.
The Scale of the Problem Across South Africa
Precise mortality statistics are difficult to obtain because pangolins are nocturnal and their carcasses are often found in remote areas, sometimes removed by scavengers before any reporting occurs. However, organisations working with pangolins on the ground have documented enough incidents to understand the pattern.
Pangolin Africa, the South African non-profit dedicated to ground pangolin conservation, has identified electric fence deaths as a leading anthropogenic cause of mortality alongside poaching and road collisions. The organisation's tracking data from radio-collared pangolins in Limpopo, North West and Mpumalanga shows that individuals regularly cross multiple fence lines during nightly foraging circuits. Home ranges frequently span 15 to 25 square kilometres in low-productivity habitat, and a single foraging night may involve crossings at four or five different fence lines.
South Africa has an estimated 250,000 to 300,000 kilometres of electric fencing, making avoidance essentially impossible for wide-ranging species. Game reserves in Limpopo, which hold some of the country's densest remaining pangolin populations, are almost entirely enclosed by high-voltage perimeter fencing. Within those reserves, internal paddocks, breeding camps and access roads add further electrified barriers at ground level.
How Pangolins Encounter Fence Lines
Pangolins do not wander randomly. Their foraging routes follow the distribution of their prey: termites and ants. Termite mounds are among the most productive foraging sites in savanna ecosystems, and they are frequently situated near fence lines. This is partly because fence clearing creates open, disturbed ground that termites colonise, and partly because fence posts provide structural anchorage for mound construction. The result is that pangolins are actively drawn toward fence lines during foraging.
Young pangolins are especially vulnerable. Adults with established home ranges eventually map the fence lines within their territory, likely through repeated sub-lethal contacts at lower-voltage sections. Juveniles dispersing from their mother's range have no such map. They encounter fences fresh, often during the dispersal period when they are covering unfamiliar ground at pace.
Seasonal patterns also matter. During the dry season, surface-foraging termites concentrate around moisture-retaining fence posts and at the base of fence lines where grass growth provides microhabitat. Pangolins track this prey concentration, increasing contact frequency precisely when fence energy output may be highest due to dry, low-resistance soil conditions.
Fence Modification: What Actually Works
Conservation engineers and wildlife managers have developed several practical modifications that significantly reduce pangolin electrocution risk without compromising the security function of the fence.
- Raising the lowest strand: Positioning the bottom strand at least 30 centimetres above ground level allows pangolins to pass beneath the fence without contact. This is the simplest and most cost-effective modification for existing installations.
- Non-electrified bottom strand: Replacing the lowest electrified wire with an earthed or dead strand eliminates the ground-level hazard entirely. Animals that brush the bottom strand receive no shock and do not trigger a curling response.
- Insulated crossing points: Where GPS data from collared pangolins reveals regular crossing corridors, the bottom strand can be insulated using rubber or PVC sleeves. These are affordable and durable in outdoor conditions.
- Apron boards: Wooden panels fixed horizontally beneath fence lines at known crossing points physically prevent pangolins from making contact with lower strands while passing underneath.
- Lower energiser voltage at night: Some larger operations have installed timer-controlled energisers that reduce pulse output during peak pangolin activity hours (roughly 20:00 to 02:00) without disabling the fence entirely.
Landowner and Reserve Manager Involvement
The good news is that fence modification programs in South Africa are gaining traction. Pangolin Africa has partnered with game reserves across Limpopo and North West to audit fence infrastructure and fund bottom-strand modifications. Several conservancies in the Waterberg and Bushveld regions now include pangolin-friendly fencing standards in their membership requirements.
Private landowners outside formal conservation areas remain the harder constituency to reach. Farmers who do not know pangolins frequent their properties have no incentive to modify fencing. Awareness campaigns that include photographs of confirmed fence deaths, distributed through agricultural extension offices and farming associations, have shown results in changing landowner behaviour in pilot areas.
If you find a dead pangolin near a fence line, the most useful action is to report it immediately to Pangolin Africa or your provincial nature conservation authority (CapeNature, Limpopo Nature Conservation, Ezemvelo KZN Wildlife). Photographs of the carcass and fence configuration, with GPS coordinates, help build the mortality database that underpins advocacy for regulatory fence standards.
The Policy Gap
South Africa currently has no national regulation requiring pangolin-friendly fence design on properties within pangolin range. Electric fence installations are regulated under the Electrical Machinery Regulations and various provincial by-laws, but wildlife impact is not a compliance criterion. Conservation bodies have argued for voluntary codes of practice as a first step, with enforceable standards to follow as baseline mortality data accumulates.
Given that ground pangolins are a Schedule 1 protected species under the Nature Conservation Ordinances and listed under CITES Appendix I, there is a legal foundation for stronger regulation. The challenge is enforcement across millions of kilometres of privately owned fence line.
Report a pangolin fence death: Pangolin Africa operates a 24-hour hotline for pangolin emergencies in South Africa. Photographs, GPS location and fence type help build the national mortality database that supports evidence-based policy change.
Electric fence mortality will not be eliminated overnight. But the modifications required to make fences far less dangerous to pangolins are inexpensive, practical, and proven. The barrier is awareness, not technology. Every landowner within pangolin range who raises their bottom strand by 30 centimetres removes a death trap from an animal that has survived 80 million years of evolution and now faces extinction within decades.