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<\/div>\n<\/div>\n<\/div>\n<\/section>\n<\/div><\/div>\n<\/div>\nSnakes that borrow toxins from their meals sound unusual, yet nature often works in unexpected ways. The red-necked keelback is one such species that doesn\u2019t produce its own venom but instead relies on chemicals gathered from what it eats. These snakes consume poisonous toads and store the toxins in specialised glands located in their necks. The idea that a predator can repurpose another creature\u2019s defences is striking on its own. What is more intriguing is how these snakes appear to manage and use those toxins without clear awareness of how much they actually have stored. Recent research, reported by Scientific American and authored by Christa Lest\u00e9-Lasserre, explores this behaviour in detail and raises questions about how these reptiles decide when to stand their ground or retreat.<\/p>\n The red-necked keelback, known scientifically as Rhabdophis subminiatus, feeds on toxic toads. After ingestion, toxin molecules called bufadienolides are absorbed through the intestines. These compounds are then transferred to paired storage organs known as nuchal glands, located around the neck.The snake does not invest energy in producing venom. Instead, it reuses what is already present in its environment. Experts say this adaptation gives the snake a defensive edge without the metabolic cost of venom production. When threatened, the keelback can display a raised neck posture, exposing these toxin-filled glands as a warning signal.<\/p>\n When the snake has recently eaten toxic prey, its behaviour shifts. It becomes more assertive. It raises its body, flares its neck, and faces potential predators such as mongooses. The posture appears deliberate, almost like a challenge.If the snake has not consumed toxic prey recently, the behaviour changes noticeably. It may avoid confrontation and attempt to escape instead. This difference suggests that diet plays a key role in shaping defensive responses, although the exact internal mechanism remains unclear.<\/p>\nHow red-necked keelback snakes store toxins from
<\/h2>\n<\/p>\nRed-necked keelback defensive behaviour
<\/h2>\n<\/p>\nRed-necked keelback toxin level monitoring study findings
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