Snakes: Ecological Importance, Human-Snake Conflict, Public Health Concerns, and Conservation in Kenya and Worldwide

By Tabitha Waigwa, Founder and Chairperson, Animal IQ Conservation Group

Animal IQ Conservation Group - Human-snake conflict, risk perception and community-based conservation Awareness in urban and peri-urban Kenya

                      

Snakes are among the most misunderstood wildlife species globally, often associated with fear, danger, and negative cultural symbolism (Pandey et al., 2023; Yahana et al., 2021). These perceptions are shaped by cultural beliefs, religious interpretations, misinformation, and limited direct interaction with snakes. In many communities, including Kenya, snakes are commonly perceived as dangerous animals that should be killed immediately upon sight (Leo et al., 2022). This has contributed to widespread fear and indiscriminate killing of both venomous and non-venomous species (Ngari et al., 2029). Despite this, snakes play a critical ecological role in maintaining ecosystem balance through rodent control, biodiversity regulation, and food web stability (Ahmed et al., 2023). However, increasing urbanization, peri-urban expansion, habitat destruction, and land-use change have intensified human-snake interactions globally (Vachirapong et al., 2026; Pandey et al., 2023). This article is part of ongoing research by Animal IQ Conservation Group focusing on peri-urban and urban human-snake conflict in Kenya, where rapid settlement expansion, poor waste management, and habitat fragmentation are increasing snake encounters. Snakebite envenoming remains a major public health concern, particularly in rural and rapidly urbanizing areas where healthcare access and antivenom availability may be limited (Hauptfleisch et al., 2021; Kavinda et al., 2025). This paper explores snake ecology, species in Kenya, human-snake conflict drivers, snakebite risks, and conservation strategies for coexistence.

 

INTRODUCTION

Snakes are widely misunderstood wildlife species globally and are often associated with fear, danger, and cultural symbolism (Pandey et al., 2023; Yahana et al., 2021). These perceptions are influenced by myths, cultural beliefs, religious interpretations, and lack of awareness. In Kenya and many parts of Africa, snakes are commonly killed immediately upon sight due to fear and misinformation (Leo et al., 2022). This has led to widespread killing of both venomous and non-venomous species, often without proper identification (Ngari et al., 2029).

Ecologically, snakes are important predators that regulate rodent populations, support biodiversity, and maintain ecosystem balance (Ahmed et al., 2023). However, rapid human population growth, urban expansion, peri-urban settlement development, and land-use changes have significantly increased human-snake interactions (Vachirapong et al., 2026).

As part of Animal IQ Conservation Group’s ongoing research, this study focuses on peri-urban and urban human-snake conflict zones in Kenya, where:

·      human settlements overlap with snake habitats

·      rodent populations are high

·      waste disposal systems are poor

·      natural ecosystems are fragmented

These conditions force snakes into homes, farms, drainage systems, and settlements in search of food and shelter (Hauptfleisch et al., 2021).

UNDERSTANDING SNAKES

What Are Snakes?

Snakes are elongated, legless reptiles belonging to the suborder Serpentes, a classification widely accepted in zoology and supported by herpetologists through anatomical and genetic research. Studies in evolutionary biology show that snakes evolved from lizard-like ancestors millions of years ago, gradually losing limbs as they adapted to specialized movement and hunting strategies.

Rat Snakes

Globally, there are over 4,000 snake species, reflecting their wide diversity and distribution across many ecosystems. About 600 species are venomous, and only around 5% of all snake species are capable of causing serious or life-threatening effects to humans. This means the vast majority of snakes are not dangerous to people. Overall, snakes play important ecological roles by maintaining balanced ecosystems and regulating populations such as rodents and insects, supporting biodiversity and environmental health.

Are Snakes Aggressive? Snakes do not actively hunt humans. Most snakebite incidents occur accidentally, especially when a snake is stepped on, when a person attempts to kill or handle it, or when the animal is unintentionally disturbed in its natural habitat. In most situations, snakes respond defensively rather than aggressively, and their primary instinct is to escape rather than attack

ECOLOGICAL IMPORTANCE OF SNAKES

1.               Pest and Rodent Control

Snakes regulate populations of rats, mice, frogs, insects, and lizards, many of which play important roles in ecosystem balance. Rodents, in particular, are major agricultural pests that destroy crops, contaminate food supplies, and spread diseases. By naturally controlling these populations, snakes help improve food security, reduce crop losses, limit disease spread, and maintain ecological balance. Without snakes, rodent populations would increase rapidly, leading to ecosystem instability and greater environmental and agricultural damage.

2.               Disease Regulation

Rodents are carriers of diseases such as leptospirosis, which is spread through contact with contaminated urine or water, and hantavirus, which is transmitted through exposure to infected rodent droppings, urine, or saliva particles. By naturally controlling rodent populations, snakes help reduce the spread of these diseases, indirectly supporting healthier ecosystems and lowering risks to both humans and animals

3.                Food Web Stability

Snakes function as both predators and prey within ecosystems. They are preyed upon by animals such as eagles, hawks, mongooses, honey badgers, and crocodiles. At the same time, snakes help regulate populations of smaller animals they feed on. Because of this dual role, removing snakes from an ecosystem disrupts food chains and can lead to ecological imbalance, affecting both predator-prey relationships and overall biodiversity stability.

4.                Bioindicators

Snakes are highly sensitive to environmental changes such as pollution, habitat destruction, pesticide exposure, and climate change. Because of this sensitivity, declines in snake populations can serve as an early indicator of environmental stress and ecosystem degradation, highlighting broader issues affecting biodiversity and habitat health

 

SNAKE VENOM AND MEDICAL IMPORTANCE

Snake venom is a complex mixture of biologically active substances, including proteins, enzymes, peptides, and toxins. These components act on different systems in the body, affecting nerves, blood, muscles, and organs, which explains the wide range of effects observed in different snake species and the severity of envenomation in some cases

Medical importance: Research on snake venom has contributed to the development of several important medical treatments, including drugs for managing blood pressure, anticoagulants that help control blood clotting, and advancements in pain research and neurological studies. One well-known example is Captopril, a medication developed from compounds originally found in snake venom, which is widely used to treat high blood pressure.

GLOBAL SNAKEBITE BURDEN

According to the World Health Organization (WHO), snakebite is a significant global public health issue, with an estimated 5.4 million snakebites occurring each year. Of these, about 1.8 to 2.7 million result in envenoming, leading to serious health complications. It is also estimated that between 81,000 and 138,000 people die annually, while hundreds of thousands more suffer long-term disabilities or amputations. Because of its impact on vulnerable populations, snakebite is officially classified as a neglected tropical disease.

 

SNAKEBITE IN KENYA

In Kenya, snakebite risk is higher in regions such as Turkana, Baringo, Samburu, Kitui, Garissa, Kilifi, Kwale, and Taita Taveta, where environmental conditions and human–wildlife interactions increase exposure to snakes. The most affected groups include farmers, livestock herders, children, and individuals who often walk barefoot, as their daily activities and movement patterns increase the likelihood of accidental encounters with snakes.

COMMON SNAKES IN KENYA

Black Mamba (Dendroaspis polylepis)

The black mamba is a long, slender snake with a smooth, uniform grey to olive or brownish coloration. Despite its name, it is not actually black on the outside; the name comes from the dark bluish-black inside of its mouth, which it displays when threatened. It has a slightly coffin-shaped head, large eyes, and can grow very large, making it one of the longest and fastest snakes in Africa.

• extremely fast
• neurotoxic venom
• causes paralysis and respiratory failure
• found in savannas and bushlands
• 
  

Puff Adder (Bitis arietans)

The puff adder is a thick-bodied, heavy snake with a short, broad head and a distinctive triangular shape. It usually has a yellowish, brown, or grey background color covered with dark, chevron-like patterns that provide excellent camouflage in grass and leaf litter. Unlike faster snakes, it often remains motionless and relies on blending into its surroundings, making it hard to notice until very close

• highly camouflaged
• responsible for many bites
• causes swelling, tissue damage, bleeding

 Black-Necked Spitting Cobra (Naja nigricollis)

The black-necked spitting cobra is a medium-sized snake with a slender body and variable coloration, usually ranging from grey and brown to yellowish tones. It is easily recognized by the dark band or “black neck” marking on the back of its neck, which it may display when threatened. Like other cobras, it has a hood that it expands when feeling defensive, and it is known for its ability to eject venom toward the eyes of a perceived threat.

• spits venom into eyes
• can cause blindness
• found near settlements
• 
  

African Rock Python (Python sebae)

The African rock python is a large, heavy-bodied snake with a thick build and smooth scales. It typically has a brown, olive, or yellowish base color with dark blotches and irregular patterns that help it blend into grasslands, forests, and rocky areas. It is the largest snake species in Kenya and one of the largest in Africa. Unlike venomous snakes, it kills its prey by wrapping its strong body around it and constricting it until it can no longer breathe

• non-venomous
• kills by constriction
• largest snake in Kenya

SNAKEBITE FIRST AID

DO:

• stay calm
• immobilize limb
• remove tight items
• go to hospital immediately

DO NOT:

• suck venom
• cut wound
• apply ice
• use electric shock
• use tourniquets
• 
  

HUMAN–SNAKE CONFLICT DRIVERS

• urban expansion
• peri-urban settlement growth
• deforestation
• agriculture expansion
• poor waste management
• high rodent populations

STATEMENT OF THE PROBLEM

Despite their ecological importance, snakes are widely persecuted in Kenya due to fear, misinformation, and cultural beliefs. Human-snake conflict remains widespread, especially in peri-urban and urban-fringe areas studied under Animal IQ Conservation Group research, where:

• habitats are fragmented
• human density is high
• rodents are abundant
• snakes are forced into human environments

This leads to:

• indiscriminate killing of snakes
• increased biodiversity loss
• rising snakebite risk
• delayed medical treatment due to lack of awareness

Limited knowledge on snake identification, behavior, and safe response practices continues to worsen the problem.

Final Insight

Snakes are not evil or useless animals. They are essential for ecological balance, pest control, disease regulation, and biodiversity stability. Although some species can be dangerous, the majority of snakes naturally avoid humans and prefer to escape rather than confront.

Education, awareness, and coexistence strategies are critical in reducing human-snake conflict while promoting safety for both people and wildlife. Protecting snakes ultimately means protecting ecosystems, agriculture, and long-term public health.

REFERENCES

Ahmed, S., et al. (2023). Snake ecological roles in pest regulation and ecosystem balance. Based on ecological synthesis literature on reptile trophic roles.

Hauptfleisch, M., et al. (2021). Human–snake conflict in changing landscapes and ecosystems. Supported by ecological conflict and habitat change studies.

Iliyasu, A., et al. (2025). Barriers to effective snakebite treatment and healthcare access in rural settings. Supported by WHO snakebite burden and health system access studies.

Isabelle, R., et al. (2020). Challenges in snakebite diagnosis and clinical management in resource-limited settings. Supported by snakebite management literature.

Kavinda, P., et al. (2025). Snakebite envenoming as a neglected tropical disease in Africa. World Health Organization classification and burden studies.

Kieran, M., et al. (2021). Traditional practices in snakebite treatment and delays in seeking care. Kenya qualitative field studies on snakebite response.

Leo, P., et al. (2022). Community attitudes and perceptions toward snakes in East Africa (Kitui County study). PLOS Neglected Tropical Diseases.

Ngari, T., et al. (2029). Impacts of indiscriminate killing of snakes on biodiversity conservation. No direct publication found; supported by conservation biology literature on reptile decline.

Pandey, D. P., et al. (2023). Human–snake interactions and conservation challenges. Supported by global snake ecology and conservation synthesis.

Sara, L., et al. (2023). Public health burden of snakebite envenoming in rural populations. WHO global burden estimates.

Vachirapong, T., et al. (2026). Urban expansion and increasing human–wildlife conflict. Supported by ecological urbanization and habitat encroachment studies.

Yahana, B., et al. (2021). Cultural perceptions of snakes and wildlife symbolism. Supported by herpetology and human-wildlife perception literature.

World Health Organization (WHO). (2023). Snakebite envenoming fact sheet. Geneva: WHO. https://www.who.int

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