Snakes are natural predators of rodents and are sometimes used or tolerated in rodent control, raising welfare questions about captive conditions, handling stress, and the ethics of using one animal to control another.
The use of snakes for rodent control sits at an intersection of traditional practice, welfare concern, and practical pest management. While snake predation on rodents is natural, deliberately maintaining snakes in captivity for this purpose requires that their welfare needs — thermoregulation, low-stress housing, appropriate humidity and substrate — are met. In practice, working snakes in agricultural settings are frequently kept in conditions that cause chronic stress. The welfare of the rodents consumed is also relevant: snakes typically kill by constriction or venom, which may or may not be more humane than alternative rodent control methods depending on implementation. Evidence-based assessment of all available options is preferable to defaulting to any single method.