There are a few thousand species of cockroaches that can fly, but they usually do not fly because they are bad fliers. 

Gills work in a way similar to lungs and extract oxygen from water to allow the fishes to breath. The fish pulls in water through the mouth and pushes it out through the gills, which absorb oxygen from the water and exchange it for carbon dioxide, which is expelled from the body. Gills allow the fishes to breath underwater. 

Fishes use the oxygen from the water in order to survive.

Fishes migrate for two main reasons – feed and reproduce. In some cases, scientists are still unsure why fishes migrate.

The blood of the cockroaches does not have hemoglobin, which is what give human blood the red color. Hence, their blood lacks the red color, making it appear white.

The antennas of a roach are important sensory organs. These antennas have small hairs on them that allow the cockroaches to sense the world around them and survive. The antennas help the roach detect heat, moisture, temperature, chemical consistency, etc.

Camels have a third eyelid that goes from side to side that protects the eyes against sand and wind. In case, sand goes enters their eye, the third eyelid can remove it. The camels can also see through the eyelid.

A camel’s hump is actually a mound of fat that acts as a food reserve in times when food is not available. 

Not all ants bite, some can also sting. The ants bite and sting as a defense mechanism if they believe that they are in danger. They also release an acid, which is why a sting or a bite turns red and itchy.

Why do bats hang upside down?

Bats hang upside down because it is a defense mechanism. Also, because their wings and hind legs are too weak to help them take flight from stop; hence by hanging upside down the bats can just fall into flight.


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