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All dog breeds are the results of converging evolutionary factors and interbreeding. Some breeds are man-manufactured and some are naturally made Cheap Ryan Dzingel Jersey , there is hardly any influence on their form and function from the ability of natural selection. For example, the Bulldog breed was a "backward" breed and bred to create a long-legged, more livelier version of the original dog breed.

Of the Tibetan breeds, the Lhasa Apso, the Tibetan terrier, is more a product of evolution rather than human influence. Of the five recognized Tibetan breeds; the Tibetan Terrier Cheap Zack Smith Jersey , Tibetan Spaniel, Do-Khyi (Tibetan Mastiff), Lhasa Apso and Shih Tzu, the Lhasa is the one breed most directly influenced by the harsh Himalayan-Tibetan climate conditions.

There are many reasons why this happened. Firstly, the Tibetans only began to selectively breed the Lhasas around 800-years ago in the city of Lhasa, capital city and home to the Dalai Lamas. However Cheap Tom Pyatt Jersey , the breed traces its origins some 2,000 years ago in the Tibetan environment.

Secondly, historians highly speculate whether these Tibetans actually attempted the sophisticated practice of selective breeding that is so popular today. Early Tibetans were hunters and herders who depended on Tibetan dogs to hunt, protect flocks and serve as watchdogs and companions to humans. The natural tendencies of Tibetan breeds, fashioned by evolutionary forces, were more than enough for for ensuring survival tasks faced by the Tibetans.

Thirdly Cheap Bobby Ryan Jersey , the physical form of a Lhasa Apso has remained largely unchanged from its original form, because it is still able to conserve heat when necessary. Cold adapted animals have bodies with a higher muscle and fat ratio, in comparison to bone mass of other breeds that have had to adapt to a warmer environment.

The amount of heat produced by an animal is directly proportional to its weight or volume. The larger the body, the more heat it produces. What is known, is that heat loss is also proportional to the body's surface area, the more surface there is Cheap Chris Wideman Jersey , the faster heat is lost. Conserving heat is a function of the ratio of body mass in relation to area, the one with the most surface will lose heat more quickly.

Because the body of a Lhasa Apso is shorter and rounded, it has less surface area than a longer-legged, equal in weight, warmer environment cousins. Those same forces also govern body type; people of Eskimo lineage have shorter, stouter bodies and less surface mass than an equally weighted Equatorial person who has a longer Cheap Mike Condon Jersey , leaner body and a higher surface area. In short, to limit loss of heat in the cold, an animal is better served by a body that is as compact and short-legged as possible.

Nature has adapted the body of a Lhasa Apso to suit the hills and villages of the Himalayan Highlands. This breed is built for stamina, not speed, for walking, jumping and climbing Cheap Matt Duchene Jersey , and not like the bodies of other dog breeds. These dogs are well suited for their environment and are well loved by their native owners. If your considering getting a Lhasa Apso, don't worry, this breed will make a great addition to anyone's family.
Oil Change: The Pros and Cons of Synthetics Autos Articles | November 19, 2010
When your car needs an oil change, your choices for the actual type of lubricant used may be a bit confusing. Synthetic motor oils have their own benefits, but may not be for every car. Read on to learn why this is so.


Synthetic oil came about in the 1970?s under the sole use of avid racers and hotrodders Cheap Mark Stone Jersey , but the use of synthetics has yet to catch on in today?s regular auto industry. Keeping up with your engine lubricant needs through regular oil change procedures is one of the best things you can do to prolong the life of your vehicle, but a controversy remains as to whether synthetic is the way to go for everyday drivers.

So what are the benefits of choosing this technology over the regular stuff that comes from the ground? Synthetic is made in a lab, so there are really no byproducts. In spite of all the refining that goes on with traditional oil, contaminants will still appear, and since keeping contaminants out of the engine is the primary job, why begin with putting something into the car that already contains them?

Synthetic oil is made to not break down as quickly as the conventional kind Wholesale Ottawa Senators Jerseys , and additives are present to protect your engine for longer. They are also made to withstand extreme weather conditions. So if you live in an extreme climate or in an area that experiences extreme seasons, you may want to consider this option when the time comes for an oil change.

The downside of making the switch is the initial cost. It is sold for three to four times the cost of conventional engine lubricants, but engine oil analyses have indicated that those who use the synthetic versions may be able to wait twenty thousand or more miles before a scheduled oil change as long as the filter is replaced every ten thousand miles. As a result, the initial cost is overshadowed by the savings accrued over the life of the vehicle.

Another fear set forth by safety gurus is that regular and more frequent oil changes are the window into other maintenance concerns. Most of us take our cars in for changes three to four times a year, and at those times other preventative maintenance checks are performed. Using a synthetic lubricant does not mean that you can forget about proper car care.

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