moles
animals can have holes for ears or can use smell if they don't have ears
Animals use their ears to hear sounds in their environment, communicate with each other, and detect potential dangers. Ears also help animals maintain balance and orient themselves. Some animals, like bats, use their ears for echolocation to navigate and find prey.
Same way we do.
The shape of an animal's ears can help determine how well it can hear. Large ears tend to collect and funnel more sound waves to the ear canal, improving hearing sensitivity. The distinctive shapes of some animals' ears can also help them detect the direction of a sound more accurately.
Rabbits' ears are on top of their heads because they can quickly turn in any direction. Rabbits are prey animals, and this helps them hear predators better. Monkeys are not generally preyed upon, and they use their brains more to avoid danger than their ears. Since they do not rely as much on hearing, their ears are located at the sides of their heads.
Some bats use their ears to have sonar vison which lets them move in the dark without using their eyes.
circumvolutionary ears
There are not any animals that have more than two ears. The ears of animals help them to hear things, especially predators.
Because of the way we formed from our cousins. Which are primates which is scientifically proven.
Snakes and fish are examples of animals that lack external ears.
Elephants use energy transfer, manly african elephants, with their ears etc.
Depending on the breed of dog, the ears will be held in different positions. Boston terrier, have narrow pointy ears set far apart on their head. Malamutes have strait rounded ears. Labradors have triangluar drooping ears. Greyhounds have the rosebud/folded ears (usually). Jack Russels have button ears. It really all depends on the individual.