All lions have short hair. They are not bald. Being bald is not a mistake. Whales are bald, for example, and so are some seals. The reason whales evolved no hair is that hair is mainly for insulation, by trapping air. Air is a good insulator. Since there is no way for whales to keep their hair from getting wet, they have no use for hair, since wet fur does not insulate. So, it is much better to lose fur than to keep it. Similarly hippos have no use for hair since they stay in the water most of the time, and besides, because of their large size, they do not lose heat to the environment as easy as small animals, since large animals have proportionally less body surface per cubic inch of volume. Hippos also live in a hot climate and losing body heat is the least of their problems. Sea otters do have a lot of fur and it keeps them warm but they have to groom their fur frequently to keep them from getting wet.
Lions have short hair and it serves them well, since they live in a hot climate. Short fur means they cannot overheat as easily. Other animals that live in the same habitat as lions, such as zebras, elephants, rhinos, and wildebeests, either have very short hair or they are nearly hairless. Male lions have manes because their main job is to protect their territory. The manes help them when they fight with other lions, by giving them a psychological advantage. It makes them look bigger and the fur partially protect them physically when they are in a fight, as it is a barrier between skin and the claws and teeth of another lion. Females do most of their hunting, so they are better off without the mane because the mane prevents them from losing excessive body heat. A lion can easily overheat because of the hot climate they live in.
· 1 month ago