India Considers Using Crocodiles and Venomous Snakes to Deter Migrants

India is considering the release of venomous snakes and crocodiles into riverine border areas with Bangladesh to serve as a biological barrier against illegal migration.

The proposal is being explored as an alternative to physical fencing in regions where the terrain makes traditional barriers impractical. The measure is currently under discussion within the Border Security Force (BSF), India’s primary border guard agency.

Border Infrastructure and Terrain Challenges

The total length of the border between India and Bangladesh is 4,096 kilometers. While the nationalist government led by Prime Minister Narendra Modi has invested significant resources into fencing this frontier, approximately 20 percent of the border remains largely open.

Of the 850 kilometers that currently lack fencing, officials have identified 175 kilometers as unsuitable for physical barriers. These specific stretches are characterized by marshy terrain and a high risk of flooding, which complicates the construction and maintenance of permanent fences.

In these riverine environments, the BSF is evaluating the feasibility of using dangerous reptiles to deter crossings.

Administrative Directives

The consideration of this biological barrier is documented in internal communications. An official memo dated March 26, 2026, was sent from BSF headquarters to field units stationed along the Bangladesh border.

The memo instructed these units to assess the release of reptiles as a potential operational measure in areas where physical barriers are difficult to implement.

According to reports, the memo indicated that the use of these animals is in line with home minister Amit Shah’s directions. Amit Shah, a close aide to Prime Minister Modi, has been the primary official leading the crackdown on immigration in India’s eastern states.

Affected Regions and Political Context

The gaps in the border fence where these measures are being considered are primarily located in five Indian states:

• West Bengal
• Assam
• Meghalaya
• Tripura
• Mizoram

Migration across the border in these states has become a divisive political flashpoint. The Indian government has focused on stopping illegal entry from Bangladesh, which is a Muslim-majority nation.

Human rights organizations have raised concerns regarding the ruling party’s rhetoric toward immigrants. These groups have warned that minority communities in the border regions have been caught in the crossfire of populist political narratives.

The proposal to use crocodiles and venomous snakes as a deterrent represents a shift toward biological security measures in the absence of viable engineering solutions for the marshlands of the eastern frontier.