Friday, August 30, 2013

silver fox dog

Dmitri Belyaev fled Moscow in Stalin’s Russia post-World War II when Darwinian theories of evolution were prohibited.  Hidden in Siberia, he continued testing Darwinian ideas under the disguise of a fur farm.  While breeding foxes for the fur industry, he covertly began breeding a population of foxes with the hopes of revealing the genetics of domestication.  He chose foxes for breeding based on a single criterion.  He only bred them if they fearlessly approached humans. To his surprise, he stumbled onto the very cause of domestication. After a few generations of breeding, his foxes began displaying many dog-like characteristics. They developed floppy ears, spotted coats, curly tails – they even wag their tails and bark even though he never selected for any of these traits. This experimental domestication is viewed by many biologists as the most important behavioral genetics work of the past century.
We compared the experimentally domesticated foxes to a control line of foxes that was not experimentally domesticated.  We found that the experimental foxes were as skilled at using human communicative gestures as dogs while the control line performed more like chimpanzees and wolves.   Experimentally domesticating the foxes to be "nicer" made them "smarter"!

source: http://evolutionaryanthropology.duke.edu/research/dogs/research/domestication-of-social-cognition



photo: brian hare...domestic fox kit

Sunday, December 18, 2011

time magazine dog articles

expensive dog breeds:
http://newsfeed.time.com/2011/03/16/a-million-dollar-mastiff-and-more-the-worlds-most-expensive-dog-breeds/#dogs_intro

sad:
http://newsfeed.time.com/2011/11/29/tearjerker-alert-former-lab-beagles-see-the-sun-for-the-first-time/

protest dog:
http://www.time.com/time/photogallery/0,29307,2102191_2327702,00.html


Tuesday, December 13, 2011

dog intelligence

Moscow's Stray Dogs Evolving Greater Intelligence, Including a Mastery of the Subway


Waiting for the 8:10 To Tverskaya Maxim Marmur, via The Financial Times
For every 300 Muscovites, there's a stray dog wandering the streets of Russia's capital. And according to Andrei Poyarkov, a researcher at the A.N. Severtsov Institute of Ecology and Evolution, the fierce pressure of urban living has driven the dogs to evolve wolf-like traits, increased intelligence, and even the ability to navigate the subway.
Poyarkov has studied the dogs, which number about 35,000, for the last 30 years. Over that time, he observed the stray dog population lose the spotted coats, wagging tails, and friendliness that separate dogs from wolves, while at the same time evolving social structures and behaviors optimized to four ecological niches occupied by what Poyarkov calls guard dogs, scavengers, wild dogs, and beggars.
The guard dogs follow around, and receive food from, the security personnel at Moscow's many fenced in sites. They think the guards are their masters, and serve as semi-feral assistants. The scavengers roam the city eating garbage. The wild dogs are the most wolf-like, hunting mice, rats, and cats under the cover of night.
But beggar dogs have evolved the most specialized behavior. Relying on scraps of food from commuters, the beggar dogs can not only recognize which humans are most likely to give them something to eat, but have evolved to ride the subway. Using scents, and the ability to recognize the train conductor's names for different stops, they incorporate many stations into their territories.
Additionally, Poyarkov says the pack structure of the beggars reflects a reliance on brain over brawn for survival. In the beggar packs, the smartest dog, not the most physically dominant, occupies the alpha male position.
The evolution of Moscow's stray dogs has been going on since at least the mid-1800s, when Russian writers first mentioned the stray dog problem in the city. And that evolution has been propelled by deadly selective pressure. Most of the strays arrive on the streets as rejected house pets. Of those dogs kicked out of their homes, Poyarkov estimates fewer than 3 percent live long enough to breed. To survive those odds, a dog really does have to be the fittest.
source: http://www.popsci.com/science/article/2010-01/moscows-stray-dogs-evolving-greater-intelligence-wolf-characteristics-and-mastery-subway

Friday, May 6, 2011

OSAMA BIN LADEN DOG - SALUTE TO MILITARY DOGS

A belgian mallinois called Cairo assisted in the assault on Osama's compound.
Dogs are increasingly important in America's combat operations abroad, and some have been outfitted with special (and adorable) "doggles" to protect their eyes, oxygen masks to protect their lungs as they parachute out with soldiers at high altitudes, and even waterproof vests that contain infrared cameras that transmit video back to servicemen watching a monitor yards behind them.