If you happen to get up close and personal with a live lobster, don’t worry of getting bitten through its mouth. Be mindful of its claws or pincers which are very powerful and can tear through human flesh. While lobster have mandibles that are used to tear food apart, they do not have teeth in their mouths to chew their meals. However, they do have teeth-like projections in their stomachs which are used to grind their food. The teeth-like projections look like molar surfaces and are called the “gastric mill.”
Yes, up to a week. Cockroaches are said to be one of the most tenacious creatures on earth and are often cited as the most likely survivors of a nuclear war. They can easily adapt to, and thus survive, harsh conditions.
Another strange fact about the cockroach is that it can survive without its head for up to a week. While humans and other animals are considered worm food the instance their heads are chopped off, a headless cockroach will continue to live much longer than other decapitated creatures.
This is because cockroaches have unique nervous and respiratory systems which means that they can breathe even without their heads. They also do not bleed to death when their heads are chopped off because they don’t have a huge network of blood vessels like that of humans and other animals. Any wound is immediately sealed off by clotting. In fact, cockroaches do not need blood to supply oxygen to every part of its body. They breathe through spiracles which deliver air to each cell of the body through a set of tubes called tracheae.
Yes, it is true that elephants cannot jump, if jump refers to the state of having no feet on the ground at the same time after propelling oneself from a stationary position. The elephant’s weight makes it physiologically impossible for it to do so plus the fact that the bones on its feet are more closely packed together than other mammals. Thus, they do not have the flexibility or spring mechanisms that would enable them to jump. Furthermore, elephants don’t really like to have more than one foot off the ground at once.
However, the elephant is NOT the only mammal that can’t jump. Sloths, rhinoceroses and hippopotamuses also known to be non-jumping mammals. But unlike elephants, it is possible for these animals to have all four feet off the ground when they run.