Why do garter snakes have anticoagulant in their bite?

Garter snakes have anticoagulant properties in their saliva to prevent blood clotting in their prey, allowing them to more effectively consume larger meals without obstruction. This adaptation also helps facilitate the digestion process by ensuring that the prey's blood remains fluid, which can enhance nutrient absorption. Additionally, the anticoagulant may aid in immobilizing prey, making it easier for the snake to capture and consume it.