Why do rabbits have long ears?

Answer: Detect predators and cool body

Detect predators and cool body ✓ — Correct! Dual function—hearing and cooling! Rabbit ears serve: (1) Predator detection—large pinnae funnel sound, detect threats early. Nearly 360° hearing coverage. (2) Thermoregulation—extensive blood vessels dissipate heat (large surface area). Desert rabbits (jackrabbits) have longest ears—hot climate adaptation. Ear position signals mood: upright (alert), back (relaxed/aggressive). Vulnerable prey animals—early warning system critical. Can rotate ears independently!

Long ears attract mates — Wrong. Ear length isn't sexual selection trait. Long ears evolved for predator detection (hearing) and heat dissipation in hot climates.

Navigate underground burrows — Wrong. Rabbit ears don't help with underground navigation—rabbits rely on whiskers and memory for that. Long ears evolved for detecting predators and dissipating heat.