One of the most distinctive features of some animals is their large ears. But why do some animals have larger ears?
One theory is that larger ears help to dissipate heat. This is because the surface area of the ear is increased, and this allows more heat to be released from the ear.

Another theory is that larger ears help to improve hearing. This is because the larger ears can collect more sound waves, which then allows the animal to hear better.
Finally, it is also possible that the large ears evolved for protection. For example, in some animals such as deer, the large ears can be used to deflect branches and other obstacles when the animal is running through the forest.
So, why do some animals have larger ears? There are a number of different theories, but no one answer is definitive. It is likely that each species has evolved larger ears for its own specific needs and purposes.
For example, the large ears of an elephant may help to dissipate heat, while the large ears of a deer may help to protect the animal from obstacles. Whatever the reason, it is clear that large ears are a distinctive feature of some animals, and they serve an important purpose in their lives.

Do animals with bigger ears hear better?
Yes, larger ears help animals to hear better because they can pick up more sound waves.
Do animals with bigger ears sweat less?
Some animals may have a larger surface area of their ear which you could compare to the skin on your head and so some might sweat/cool down better than others. And as we know it doesn’t necessarily take a lot of sweat to cool down the blood flow.
Do animals with bigger ears run into things less?
Possibly, as mentioned before the larger surface area could act as a deflector for branches and leaves when sprinting through dense vegetation. But this is not always the case, some animals with large ears (e.g. rabbits) tend to have a really good sense of direction and will run in a specific direction, swerving around little things.

In conclusion, animals with bigger ears generally have one of three benefits: they can hear better, cool down easier, or run into things less. Each animal’s ear size is specific to its needs and helps it live the best life possible. Whatever the reason, it is clear that large ears are a distinctive feature of certain animals and serve an important purpose in their lives.