أعمار الحيوانات .. كتاب في سبيل موسوعة علمية .. الدكتور أحمد ذكي

Ages of animals

Determining the maximum lifespan that animals reach, or estimating their average lifespan, is a matter of great difficulty.

Man, in civilized nations, has a history that is recorded at birth, a history that is recorded at death, and records that he refers to when studying. Of course, none of this exists in the animal world.

Table of life expectancy calculated from years ago

Moreover, if you encounter an animal, you do not know its age, except in rare cases, in which the growth of the body has an effect that remains on the body every year. Like a tree whose trunk cross-section increases by a ring every year. We count the rings of the cut trunk, and from that we know how many years have passed for the tree since it grew in the ground.
For this reason, researchers relied in estimating the ages of animals on what they kept in their laboratories, or in their zoos, and thus it is an estimate of the ages of these animals based on domesticated living. Living on domestication is not living in brutality in the jungles, mountains and deserts. A domesticated animal is not exposed to the dangers of life as an animal that has continued to be predatory is exposed to it, and it undoubtedly has a longer lifespan when domesticated because it is protected from predation, which comes from a stronger animal that is domesticated. Monsters, whether small or large, often do not live to their old age. In the wild, it kills or is killed, eats or is eaten.
Many people have claimed long lives for the dispersion of animals. Then research and verification revealed her error.
Researchers also suspect that older age accompanies an animal with a larger body. This is true to an extent, but this perception has many facts that contradict it.
Perhaps estimating the average lifespan of animals is closer to estimating the maximum ages reached by different species.
You can find in the attached illustration some of these ages and their averages.

Table of average lifespans for some animals

- Man is mortal in himself, immortal in his species

Even though I, the man, are mortal, and you, woman, are mortal, we are only annihilated by ourselves, and the human race will live forever after us until God wills. Every hundred years, the Earth completely changes its human clothes and wears new clothes. She changes her clothes from an animal in the same way or more, and so does she. From that, over the years, they wear new clothes, as individual mortal beings, everlasting species and descendants.

- Among the living things are those that are immortal in themselves and their descendants

Look at animals (and plants) that consist of one cell. It divides to start a new generation in minutes, but it is alive and divided into two neighborhoods. Then each of these two neighborhoods is divided into two neighborhoods. There is nothing between the living and its division that dies. Based on this consideration, it is correct to say that these living things, which we always like to call the vile, are truly and truly immortal, not by their genera in lineage, but by their selves as well as being divided, and that is what remains for them the food from which they live, and the sources from which they derive the means of living and development.

Famine is a disease with symptoms

While awaiting the expected global famine, knowledgeable people talk about the effect of hunger on people’s bodies. Or if you like, in the bodies of sick people, hunger is nothing but a disease.

The minimum amount of food that a person must live on per day is equal to 2,500 calories.

If an individual does not find food other than 1,600 calories, for example (which is about a pound of grain, such as wheat or corn), the first thing that happens to him is a rapid loss of body weight. After a few weeks, the speed of weight loss slows down. After two or three months, when the man has lost about a quarter of his weight, balance and stability are established in his body that lasts a quarter of many months.

If after that his food falls below 1,600 calories, his body begins to lose weight, the diseases of famine begin to become more apparent and apparent, he becomes lethargic and sluggish, the number of his heartbeats decreases, his blood pressure decreases, and his heart begins to atrophy. His emotions become dull, and his mind is dominated by an intense desire for food.