Page 9 - Animal Facts

Sharks will be crushed by their own weight when out of water, and it is harder for them to float then you might think!

Shark skeletons differ a lot from the skeletons of bony fish and terrestrial vertebrates. Their skeletons are made of cartilage and connective tissue which means they are cartilaginous. The fact that this reduces the weight of a shark's skeleton means it also saves energy.

Sharks do not have rib cages to protect their internal organs, and when out of the water they can very easily be crushed under their own weight. When they are in the water, the buoyant force acting against their weight prevents this from happening.

They do not have gas-filled swim bladders for buoyancy like other fish and have to use their pectoral fins in a manner similar to the use of wings by airplanes. This is called 'dynamic lift'. As they swim, they position their pectoral fins to create lift which allows them to maintain a certain depth.

There is a myth that sharks have to keep moving in order to breathe, but they actually have to keep moving to stay afloat because they do not have swim bladders. This is also why they are incapable of swimming backwards or hovering. While at rest, most sharks pump water over their gills to ensure a constant supply of oxygenated water.


A man in Germany has raised over 70 wolves and he’s established himself as the Alpha of the pack!

Werner Freund is a former German Paratrooper. Since 1972, he has dedicated his life to raising wolves in the Wolfspark Werner Freund. The 25-acre reserve is home to 29 wolves.

Freund acquired his first litter from a zoo when they were cubs and has reared them by hand. He lives closely with them and behaves as an alpha male to be accepted and respected.

Freund has a good relationship with his animals, and even does things as feed them meat mouth to mouth to earn their respect. He even takes bites of dead animals to better integrate with them!

Check out more amazing photos at the source


Some awesome lists!

Rattlesnakes don’t use their fangs when they fight!

Rattlesnakes are amazing animals! While rattlesnakes have a bad reputation, in truth people and rattlesnakes don't often come in contact with one another so people aren't bitten very often.

But if you do meet up with one, be careful! A rattlesnake can bite a victim even after it's head has been removed! Scientists say that it's a reflex action (a response that is built into it's nervous system and doesn't need to be learned).

Rattlesnake heads have been known to make their striking motions for up to one minute after decapitation.

Other interesting fact about rattlesnakes is that if they engage into a fight, they will not use their fangs to poison each other! This is mainly because they wouldn’t really cause harm to each other that way.


Zimbabwe decided to promote the ivory trade to save African elephants--and it worked! How?

One of the funny things about trying different approaches to a problem is that sometimes the outcomes can be what you would least expect. That could not have been truer for some conservationists.

In 1989, they voted to end the ivory trade to save African elephants. The decision seemed smart. Banning the ivory trade would ensure that the market for ivory products would go away. But people always find ways to bypass the rules, and the illegal ivory trade did not go away. A black market simply emerged, endangering elephants further.

Zimbabwe decided to do the exact opposite by promoting the ivory trade. Private individuals can own and breed elephants. Because it is to their interest to make money from ivory, the owners are sure to take care of the elephants and not kill them. Or to put it another way, when something is owned by everybody, it's really owned by nobody. Therefore, people who own something as collective property don't feel personally responsible for it.

Other African nations have since followed Zimbabwe's lead. In some countries in Southern Africa, the elephant population has risen 40%. In contrast, their numbers continue to shrink in areas of the continent where they are considered the collective property of nations.



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