Which animal has the best ears?

There's no single "best" ear, as different animals have ears that are best suited for different things! Here are a few examples:

* Elephant: Their large ears help them to hear low-frequency sounds from far away and also radiate heat away from their body.

* Bat: Their ears are adapted for echolocation, allowing them to "see" in the dark by emitting sound waves and listening to their echoes.

* Fox: Their pointed, triangular ears give them excellent hearing, helping them to detect prey and predators.

* Rabbit: Their long, twitching ears help them to hear predators approaching from behind.

* Owl: Their asymmetric ears help them to pinpoint the exact location of prey, even in the dark.

Ultimately, the "best" ears depend on what you're looking for!