- Eyelids and eyelashes: Many animals have long, thick eyelashes that help to block snow from entering their eyes. Some animals, such as Arctic hares, also have specialized eyelid structures that can close completely to protect the eyes from snow and other environmental irritants.
- Eyebrows: Animals with prominent eyebrows, such as moose and reindeer, can use them to help shed snow and ice from their faces and eyes. Eyebrows can act as a barrier, diverting snow away from the eyes.
- Fur or feathers: The fur or feathers around the eyes of some animals helps to create a natural barrier that prevents snow from reaching the eyes.
- Tear production: Increased tear production in snowy conditions can help to wash away snow and keep the eyes clear.
- Behavioral adaptations: In addition to physical adaptations, many animals also use behavioral strategies to keep snow out of their eyes. For example, many animals will squint or partially close their eyes when facing directly into snow or during windy conditions. Others may seek shelter in caves, burrows, or under trees to avoid exposure to heavy snowfall.