Showing posts with label dog facts. Show all posts
Showing posts with label dog facts. Show all posts

Wednesday, April 24, 2013

Fascinating Dog Facts

Lundehund

By Linda Cole

Dogs are such interesting creatures. We’ve had an association with them for centuries, but scientists have only recently begun to understand how unique and special they are. Because of selective breeding over the years, we've been able to tame the wild beast, so to speak, but there are still mysteries we need to unravel. Most of our modern day breeds were created just a short time ago in relation to how long man and dogs have been working together as a team. We are still discovering interesting dog facts about our canine friends dog lovers may not know.

Research has shown that children who grow up with pets in the home have 31% fewer respiratory tract infections and 44% fewer ear infections, and are 29% less likely to need antibiotics. A dog in the home can even help protect kids from the common cold and reduce the chance of your child developing asthma.

The Norwegian Lundehund, native to Norway, has some rather unique characteristics not found in any other dog breed. The dog has six toes on each foot, erect ears that can be folded closed at will – forwards or backwards – and they can bend their head backwards so far it touches their backbone. The breed is also called the Norwegian Puffin Dog; Lunde means puffin, and hund means dog.

Greyhounds can reach a top speed of 45 mph, making them the fastest dog on earth, but the Siberian Husky has endurance to outlast most other breeds. A team of Huskies can travel 100 or more miles per day at an average speed of 11 mph.

We know dogs were the first animals domesticated by us, but it's still not known exactly when that took place. The belief by researchers is that domestication took place around 15,000 years ago, but a 50,000 year old cave painting in Spain shows what experts believe is a dog-like figure in the painting.

Wednesday, March 27, 2013

Why Do My Dog’s Eyes Glow in the Dark?


By Tamara McRill

Ever spot a pair of demonically glowing green or red eyes in the dark, only to realize they belong to your cute and cuddly dog? What really gets to me is when I’m the one outside and I see the floating bright orbs peering out my window. You know, it’s that split second where you’re torn between wanting to turn and run or bust in to save your pets from...whatever “It” is.

But of course, “It” is your dog’s (or even cat’s) eyes glowing in the dark. It turns out there is even a very scientific – and reassuring – reason their eyes shine so eerily in the darkness.

Tapetum Lucidum

No, that’s not the starting phrase of an exorcism, although it is Latin. It means “bright tapestry.” The words are also the scientific term for the light-reflecting surface between a dog’s optic nerve and retina.

The tapetum lucidum is what makes dog’s eyes react to light exposure differently than human eyes, essentially reflecting the light back through their eyes like a mirror. The rods and cones make use of the multiplied light to see better in the dark. Dogs and other animals with the structure, like cats and deer, can use very low levels of light to see.

Different Colors

In addition to superior night vision, this reflected light is also what produces eyeshine in dogs…that surreal colored glow that comes out in their eyes at night. What I find fascinating is that not every dog’s eyeshine is the same color.

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