Why do certain dogs have long ears?
certain dogs have long ears due to being in the hunting category or hound blood line. when a dog smells or tracks the ears act as a sweeping motion to help stir the sent
The cropping (cutting) of dogs ears was originally done to prevent working dogs (the dog breeds that ear cropping is most commonly done to) from being bitten by rodents on the dogs floppy ears, which could cause infection. Most woking dogs still have their ears cropped even if they are not going to be used for work because it has become the "look" of the dog's breed.