< h1 class = "pgc-h-arrow-right" > scallops have 80 eyes</h1>
The scallop is surrounded by a so-called black speckled substance, which is actually its eyes.
The official name of the spot is "mantle membrane", and each scallop has an average of 80 eyes on its body. Its eyes, though unable to distinguish between color, can distinguish between light and darkness.
<h1 class = "pgc-h-arrow-right" > giraffes sleep only 20 minutes a day</h1>
Giraffes only sleep 20 minutes a day!? It sounds incredible.
Moreover, the time to sleep is only about 2 or 3 minutes.
Because giraffes are herbivores and most of the time they are highly vigilant against carnivores, they develop the habit of not sleeping for a long time in order to be able to escape.
<h1 class="pgc-h-arrow-right" > snails eat cement and concrete</h1>
On rainy days, we can often see snails gathering on the inside of the cement steps, and as the rain washes away, the snails are gulping down the cement blocks.
We all know that the cement steps are very hard, and the wet cement contains a wealth of calcium carbonate, because the heavy shell of the snail needs to be replenished with this element, so it is not difficult to understand why it eats cement.
< h1 class="pgc-h-arrow-right" > the squirrel's tail will fall off</h1>
Because of external factors, when facing danger, the tail of the squirrel has the characteristic of falling off. The subcutaneous tissue of the squirrel tail, that is, the part of the skin and muscles that are combined, is relatively small and has the characteristic of easy shedding.
The gecko's tail can regenerate after it falls off, but the squirrel's tail cannot regenerate after it falls off!
<h1 class= "pgc-h-arrow-right" > otters starve to death even when they are full</h1>
It takes a month for the otter to digest the food it eats!
Because the whole body structure of the otter is to save energy consumption, it has no ability to regulate temperature, once it continues to rain, the body temperature will decrease, and the stomach motility will gradually be insufficient.
Even if the stomach is already filled with the food you eat, the result is that you will die of hunger due to insufficient digestive power.
< h1 class = "pgc-h-arrow-right" > octopus has 9 brains</h1>
The octopus has one brain of its own, plus one brain on each of its 8 arms, and nine brains added together.
Once the brain itself gives instructions, it is transmitted to the brain on each arm, and each brain is only responsible for the neurons on its own arm.
Even if the brain itself does not know how to control the 8 arms, the brains of the respective arms will react flexibly with the external reflexes.
<h1 class="pgc-h-arrow-right" > rabbits eat their own feces</h1>
People who have kept rabbits may know that rabbits often eat their own feces.
That's because the nutrients that are broken down through the intestine in the rabbit's feces contain plant fiber, and it is not difficult to understand that these nutrients are needed in order to ingest these nutrients.
Rabbit feces contain amino acids, vitamin B, vitamin K and other nutrients.