ScienceIQ.com

Stopping In Thin Air

Imagine you're going very fast -- much faster than a race car. In fact, imagine you're going 100 or 200 times faster than a race car. When you reach your destination, you need to stop relatively quickly. How would you do it? It wouldn't take a rocket scientist to think of using the brakes. But, it might take a rocket scientist to skip the brakes, ...

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StoppingInThinAir
Medicine

What Is Sickle Cell Anemia?

Sickle cell anemia is an inherited blood disease. That means you are born with it and it lasts a lifetime. Sickle cell anemia affects the red blood cells. Normal red blood cells are smooth and round ... Continue reading

WhatIsSickleCellAnemia
Geology

Was That The Big One? Depends On How You Measured It.

The severity of an earthquake can be expressed in terms of both intensity and magnitude. However, the two terms are quite different, and they are often confused. Intensity is based on the observed ... Continue reading

TheBigOne
Medicine

Fighting Viruses

Viral diseases can be very difficult to treat because viruses live inside the body's cells where they are protected from medicines in the blood stream. Researchers developed the first antiviral drug ... Continue reading

FightingViruses
Biology

Marmaduke and the Taco Bell Chihuahua Are Cousins

You would never think Marmaduke, the enormous great dane of the newspaper cartoons, and the tiny Taco Bell chihuahua are close relatives. But the fact is, ALL dogs are pretty close relatives. ... Continue reading

Marmaduke

Does Your Beagle Have A Belly Button?

BeagleBellyButtonOur navels, also know as belly buttons, are scars left over from our umbilical cords. While in the mother's womb, a baby receives food and oxygen and rids itself of waste through the umbilical cord. One end of the umbilical cord is attached to the mother's placenta, an organ that develops during a mother's pregnancy for this very special job. The other end is attached to the baby's stomach. As soon as the baby is born and begins breathing on its own, the umbilical cord is cut. After a few weeks, the remains of the cord wither away. All that remains is the navel.

But does your dog have a belly button? Or a better question is, have you ever seen it if it does? Most people haven't. But this doesn't mean that it doesn't exist. Since mammals give birth to live young, they share in common the process of developing inside their mother. This, by necessity, requires a connection between the mother and the baby for the passing of nourishment, oxygen and clearing away waste. Dogs and cats are no different. Although each is born in a fluid-filled sac, it is still connected to its mother's placenta by an umbilical cord. In fact, a mother dog will bite and break each puppy's umbilical cord right after birth. Soon, just like us, all that's left is a scar.

Puppies don't have obvious belly buttons for a few reasons. The size of their umbilical cord is small. Sustaining a human baby requires a bigger umbilical cord, hence a bigger scar. A puppy's scar heals into a small slit rather than a round hole. And the area is quickly covered with fur, making detection more difficult. So next time your dog is taking a snooze on her back, take a look. With some investigation, you'll find its belly button.