Keeping rabbits cool is crucial, especially during hot weather, as they are prone to heat stress. Here are some tips to help keep rabbits cool:

1. Shade: Provide ample shade in the rabbit's living area. Ensure they have access to a cool, shaded spot throughout the day. You can use shade cloth, umbrellas, or natural shade from trees or buildings.

2. Ventilation: Ensure proper airflow and ventilation in the rabbit's housing to prevent the build-up of heat. Good ventilation helps in dissipating heat and maintaining a cooler environment.

3. Water: Ensure a constant supply of fresh, cool water for your rabbits. Consider using water bottles or bowls that can be placed in shaded areas to keep the water temperature lower. Monitor the water regularly to ensure it remains cool and clean.

4. Frozen Water Bottles: Place frozen water bottles in the rabbit's enclosure. They can lean against them to cool down. Avoid placing the frozen bottles directly in the rabbits' living space to prevent direct contact and potential injuries.

5. Cooling Mats or Tiles: Place cooling mats or ceramic tiles in the rabbits' enclosure for them to lie on. These surfaces stay naturally cool and can help dissipate heat from their bodies.

6. Sprinklers or Misters: Use a gentle misting system or sprinklers near the rabbit's housing to create a cooling effect. Ensure that the rabbits have the option to move away from the mist if they prefer.

7. Wet Towels or Ice Packs: Dampen towels or place ice packs wrapped in towels inside the rabbit's enclosure. Rabbits can rest against them to help lower their body temperature.

8. Avoid Hot Surfaces: Prevent rabbits from coming into contact with hot surfaces, such as metal or concrete, as these can absorb and radiate heat. Provide coverings or elevated platforms to create a cooler resting area.

9. Limit Exercise: During hot weather, limit the rabbits' exercise time or provide exercise opportunities during cooler parts of the day to prevent overheating.

10. Monitor Behavior: Keep a close eye on your rabbits for signs of heat stress, such as lethargy, excessive panting, or drooling. If you suspect heat stress, move them to a cooler area immediately and consult a veterinarian if necessary.

Remember, rabbits are sensitive to temperature extremes, so it's important to take proactive measures to keep them cool and prevent heat-related health issues.