Junior 4-H Rabbit Knowledge Practice Exam – Prep, Practice Test & Study Guide

Rabbits regulate their temperature by adjusting the blood flow to their ears. They have thin skin and large, highly vascularized ears that are exposed to the air, allowing them to dissipate heat in warm weather and conserve heat in cool weather. The other options, such as paws, nose, and tail, do not play a significant role in regulating rabbit's body temperature. Paws do have sweat glands, but they are not as efficient as the blood vessels in the ears. Nose and tail do not possess blood vessels that can regulate body temperature. So, the correct answer is A, as rabbits use their ears to regulate their body temperature.