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The dewlap is found mainly on female rabbits, although, in certain breeds, the males are also allowed a small one. Its purpose is to provide another area for the doe to pull fur from when she is making her nest for her kits.
Besides hearing the rabbits use their ears for cooling. They do not sweat or pant to cool themselves (if you see a rabbit panting it is because he is already overheated and suffering from heat...
Female rabbits are usually the ones who have dewlaps, but if a male has been neutered, he may develop a dewlap because of the lack of male hormones in his body.
Yes, all rabbits have dewlaps, even males, although it's generally more pronounced in females, and it's more pronounced in some breeds over others. Female lionheads generally do not have the most...