A rabbit's ears contain an extensive network of blood vessels that provide a large surface area for heat exchange. These vessels swell (vasodilation) when the rabbit is hot, and contract (vasoconstriction) when it is cool, so much so that they are barely visible in cold weather.
Rabbits are generally known for their massive ears, but they actually do a lot more than just hear predators and friends. Rabbits ears are crucial for thermoregulation! Their large surface areas allow bunnies to release their heat and keep cool, that's why bunnies that live in hot areas tend to have the largest ears.
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Answer:
A rabbit's ears contain an extensive network of blood vessels that provide a large surface area for heat exchange. These vessels swell (vasodilation) when the rabbit is hot, and contract (vasoconstriction) when it is cool, so much so that they are barely visible in cold weather.
Answer:
Rabbits are generally known for their massive ears, but they actually do a lot more than just hear predators and friends. Rabbits ears are crucial for thermoregulation! Their large surface areas allow bunnies to release their heat and keep cool, that's why bunnies that live in hot areas tend to have the largest ears.