A beaver’s teeth never stop growing.

It also helps that the teeth never stop growing. In fact, if they didn't wear theirteeth down on trees, their front choppers would get too huge for the beaver to eat properly! Beavers use trees as food and to build a lodge - this is the name for a beaver's house. Beavers block up streams with the trees they chew down.

How do lions mate?

The Lion Lamb explains that lions mate by growling, pawing and biting first. Once the female is in the mood to mate, she lies down and waits for the male to mount her. After copulation, which takes six to 10 seconds, the male lion gently bites the female’s neck.

The Lion Lamb details that after mating, the female turns to the male and bares her teeth. This comprises the mating cycle, which repeats itself almost every 20 minutes. Lions are capable of mating up to 40 times daily. A female lion sometimes mates with multiple partners during her estrus. This results in cubs with different fathers. Female lions also have the ability to breed synchronously, particularly when a new set of males has taken over a pride and killed the cubs. In this situation, the females come into heat simultaneously, thereby shortening the reproductive cycle for the first generation of new cubs.

The Lion Alert states that lions do not have a specific breeding season, and they often breed synchronously. Male lions typically become ready for mating at 26 months old, although they are not likely to breed before 4 or 5 years old. Reproduction generally starts to decline at 11 years, but female lions are capable of breeding until they are 15 years old.

Horses can’t vomit?

The vets agree with you: horses cannot throw up. That's what they are taught in veterinary school; that's what the books say. Horses have a band of muscle around the esophagus as it enters the stomach. This band operates in horses much as in humans: as a one-way valve. Food freely passes down the esophagus into the stomach as the valve relaxes but the valve squeezes down the opening and cuts off the passage for food going back up.

Horses, however, differ from us because their valve really works. Humans can vomit. Horses almost physically can't because of the power of the cut-off valve muscle. Also, the esophagus meets the stomach at an angle which enhances the cut-off function when the horse's stomach is bloated with food or gas. Then the stomach wall pushes against the valve, closing the esophagus even more completely from the stomach. Normally, the mechanics are such that the horse's stomach ruptures before the valve yields.

If material does pass from stomach out the esophagus, the horse is dead or nearly so. That's why horses can't vomit. But, sometimes they do. Rarely, to be sure.

Brent Kelley, veterinarian for a valuable mare during a difficult delivery, tells of one incident. After the mare delivered her foal, she laid there as if dead — not even responding to her baby's nickers. Worse: she threw up and stopped moving. Brent thought she was gone.

"But then the old girl rolled up on her sternum and called to her foal," says Kelley.

The mare lived another six years, had four more foals, and died well into her 20s.

Crocodiles Eat Stones to Affect Their Buoyancy?

It seems that crocodiles intentionally will eat stones or rocks before diving in the water. It has been thought that one reason is to help with digestion. Rocks that have been in the digestive system of an animal are called gastroliths, which literally means "stomach stones." Rocks in a crocodile's stomach might help crush and grind food especially for crocodiles who eat whole prey, particularly animals with shells and tough bones. A gastrolith can remain inside the stomach for years. Some scientists think they swallow the stones to increase their weight and to feel fuller. 

For years, it was hypothesized that eating stones might also help a crocodile stay under the water longer and to dive deeper. Many crocodilians like to float in the water with just their eyes and nostrils showing so they can ambush their prey. It was thought that a stomach full of rocks might help the crocodile keep their bodies under the water and out of sight.

New research shows that this hypothesis might be wrong! Recent research by a paleontologist named Don Henderson has shown that for the rocks to help stabilize the buoyancy of the crocodile's body, the rocks would have to account for at least 6% of the body mass of the crocodile.  They have now measured it, and the rocks only account for about 2% of body mass. Below 6%, the filling and emptying of the lungs has a much greater effect on the buoyancy of the crocodile than the stones. However, a low number of rocks might keep the crocodile from rolling from side to side. Also, with fewer rocks, they might not have helped grind up their food either. It is surprising what we are finding out today!

This shows us that even a hypothesis that seems obvious needs to be tested! It seems that the scientific method we all learned in elementary school would have some merit here! #crocodiles #crocodileseatingstones

Suriphobia is the fear of mice?

Fear of mice and rats is one of the most common specific phobias. It is sometimes referred to as musophobia (from Greek μῦς "mouse") or murophobia (a coinage from the taxonomic adjective "murine" for the family Muridae that encompasses mice and rats), or as suriphobia, from French souris, "mouse".

The phobia, as an unreasonable and disproportionate fear, is distinct from reasonable concern about rats and mice contaminating food supplies, which may potentially be universal to all times, places, and cultures where stored grain attracts rodents, which then consume or contaminate the food supply.

Snakes can't blink?

Snakes don't blink because they do not have eyelids. Each eye is covered with a single clear eye scale. These eye scales protect eyes from injury and prevent the eyes from drying out.

That is the reason snakes are unable to blink their eyes and sleep with open eyes. Most of snakes have very bad eye sight due to shed its eye scale and can only track the presence of animals by their heat and when they move.

A snake’s eye scales are part of its skin. This means when a snake sheds its skin, it must also shed its eye scales. Prior to shedding, a snake’s skin becomes dull and the eye scales become cloudy or opaque. This is because snakes secrete a milky fluid between the old skin and the new skin before they shed.

When they’re ready to shed, snakes rub their snouts against something until their skin splits. They then work to peel the skin back from their lips to their tails, turning it inside out like a stocking as they do so. Snakes tend to shed their entire skin in one piece and the eye scales are very obvious on a shed skin. Eyelids are not the only feature snakes lack. Snakes use their tongues to "smell," as they do not have nose also. The tongue constantly flicks in and out of its mouth, collecting particles from the air and identify that what is moving around by bringing them into contact with specialized organs in the mouth that examine them and tell the snake what they belong to. Even Snakes also not having ears, So they using an incredible sensitivity to vibrations in the ground to determine what is moving on around them and how far it is.

Fireflies are also known as lightning bugs?

The Lampyridae are a family of insects in the beetle order Coleoptera. They are winged beetles, commonly called fireflies or lightning bugs for their conspicuous use of bioluminescence during twilight to attract mates or prey. Fireflies produce a "cold light", with no infrared or ultraviolet frequencies.