Giraffes are herbivores that live in the African savannah and feed on leaves and twigs. They are the tallest terrestrial animals in the world.

Giraffes are very tall and have unusually long necks. Their 4 long thin and long legs are very eye-catching. With their big round eyes and elegant steps, giraffes can be regarded as representatives of tall and elegant souls in the animal world. They are giants in the animal kingdom. It is said that the giraffe is very tall, so how tall is it? Male giraffes can stand up to an average height of 5-6 meters, while female giraffes can reach an average height of 4-5 meters.

According to Darwin's theory of natural selection, some ancestors of giraffes had longer necks and others had shorter necks. In periods of lack of grass, giraffes with longer necks can eat leaves at high places, get enough food to survive, and reproduce. And those giraffes with shorter necks could not eat enough food, so they starved to death and were eliminated. In this way, under the action of natural selection, after a long period of time, giraffes gradually formed the long-necked group we see today.

Giraffes have long necks in order to eat leaves that others can't, but they also have trouble drinking water. To drink water, giraffes need to split their long legs and press their necks very low, so that they can barely lick the surface of the water. Fortunately, giraffes only need to drink water every few days.

Giraffes can reach a height of about 1.5 meters when they are just born, and the length of their necks can even reach about 2 meters in adulthood. However, the lifespan of giraffes is not long. Although giraffes cared by zoo staff may live to over 29 years old, wild giraffes that grow in nature often struggle to live beyond 27 years old.

Giraffe sleep time is generally concentrated in the night, and their rest time is generally no more than 2 hours. The root cause is actually mainly to ensure the safety of their own lives. Perhaps many people don't know that giraffes are standing even when they are sleeping. Only when they enter the deep stage of sleep will they be in a lying position, and this position is generally maintained for no more than 20 minutes.

Since giraffes are larger in height and size, they are destined to suffer from a disadvantage in reaction speed when they lie down. It takes about a minute for them to stand up from lying on the ground. If they encounter the threat of natural enemies at this time, it will undoubtedly have a significant impact on their escape. In more time, in order to allow their tired bodies to take a short rest, when there are big trees around them, giraffes will choose to lean their heads on branches in suitable positions.

Nature has given giraffes an advantage in survival, but it also comes at a price. From this point of view, the troubles of giraffes are really a lot.