The Vulture Collapse: A Catalyst for India's Stray Dog and Wildlife Crisis

India is facing a significant ecological and public health crisis stemming from the collapse of its vulture populations, which began in the early 1990s. Once numbering nearly 40 million, vultures experienced a dramatic decline due to the widespread use of diclofenac, an anti-inflammatory drug that, after its patent expired, became prevalent in veterinary medicine. When livestock treated with diclofenac died, vultures feeding on the contaminated carcasses were poisoned, leading to mass mortality and pushing the species to the brink of extinction. Vultures, as keystone species, played a crucial role in maintaining ecological health by rapidly disposing of animal carcasses, preventing the spread of pathogens. Their disappearance has resulted in a surge of stray dog populations, which now act as vectors for disease.

Vulture collapse fuels the stray dog, disease and wildlife crises

The Government of India reported approximately 3 million dog bites annually, with an estimated 18,000–20,000 human deaths from rabies each year, according to World Health Organization data. The introduction of the Animal Birth Control (ABC) Rules in 2001, which were amended in 2023, has exacerbated the situation. These rules, advocated by animal welfare groups, restricted municipal authorities from removing stray dogs, leading to unchecked population growth. Critics argue that these same groups now blame civic authorities for the escalating crisis, despite their resistance to basic dog control measures.

Vulture collapse fuels the stray dog, disease and wildlife crises

The proliferation of free-ranging dogs has severe implications for wildlife in India. Dogs have been documented attacking 80 wildlife species, including 31 that are threatened. In particular, they pose a direct threat to critically endangered species such as snow leopards and the Great Indian Bustard. A 2018 survey revealed that camera traps in 17 tiger reserves captured more images of dogs than tigers, indicating a concerning trend. The National Tiger Conservation Authority (NTCA) has acknowledged that free-ranging dogs threaten both prey and predator species through diseases like rabies and Canine Distemper Virus (CDV).

Vulture collapse fuels the stray dog, disease and wildlife crises

Despite the evidence of the dangers posed by free-ranging dogs, the NTCA extended the ABC Rules to forest buffer zones in 2020, a decision criticized for ignoring scientific data on disease transmission risks. Experts argue that India's regulatory framework for stray dog management is outdated and misaligned with conservation science. Calls are growing for a comprehensive policy overhaul that prioritizes scientific evidence and allows for the removal of free-ranging dogs from ecologically sensitive areas.

Vulture collapse fuels the stray dog, disease and wildlife crises

Conservationists advocate for the formal recognition of free-ranging dogs as invasive alien species and their exclusion from Protected Areas. They emphasize the need for effective implementation of policies that protect native biodiversity and public health. While India possesses the institutional capacity and scientific expertise to address these challenges, the political and administrative will to enact necessary reforms remains uncertain. The ongoing crisis underscores the interconnectedness of ecological health and public safety, highlighting the urgent need for action to restore balance to India's ecosystems.

Vulture collapse fuels the stray dog, disease and wildlife crises

• “What disappeared with the vultures was not just a species, but a crucial ecological function—one whose absence continues to shape India’s environmental and public health challenges today.” — Conservation Expert

Vulture collapse fuels the stray dog, disease and wildlife crises

• “The National Tiger Conservation Authority (NTCA) has acknowledged that free-ranging dogs threaten both prey and predator species through diseases such as rabies and Canine Distemper Virus (CDV).” — National Tiger Conservation Authority Official

Vulture collapse fuels the stray dog, disease and wildlife crises