Dogs
razib | September 8, 2009There's been some buzz over a recent paper, mtDNA Data Indicates a Single Origin for Dogs South of Yangtze River, less than 16,300 Years Ago, from Numerous Wolves. This is tracing the maternal lineage, and suggests that that lineage is most diverse in southern China (just as human lineages tend to exhibit the most diversity in Africa). Here's the abstract:
...We therefore analysed entire mitochondrial genomes for 169 dogs to obtain maximal phylogenetic resolution, and the CR for 1,543 dogs across the Old World for a comprehensive picture of geographical diversity. Hereby, a detailed picture…
edyong | September 4, 2009Domestic dogs are very different from their wolf ancestors in their bodies and their behaviour. They're more docile for a start. But man's best friend has also evolved a curious sensitivity to our communication signals - a mental ability that sets them apart from wolves and that parallels the behaviour of human infants. Dogs and infants are even prone to making the same mistakes of perception.
Like infants less than a year old, dogs fail at a seemingly easy exercise called the "object permanence task". It goes like this: if you hide an object somewhere(say a ball under a cup) and let the…
razib | August 25, 2009Speaking of Richard Dawkins, he's back to science, in this case an excerpt from his new book, The Greatest Show on Earth: The Evidence for Evolution:
The evolution of the dog, then, if Coppinger is right, was not just a matter of artificial selection, but a complicated mixture of natural selection (which predominated in the early stages of domestication) and artificial selection (which came to the fore more recently). The transition would have been seamless, which again goes to emphasise the similarity -- as Darwin recognised -- between artificial and natural selection.
Nothing new in the…
razib | July 21, 2009We know that dogs can read human faces, it turns out that babies can infer the meaning of different dog barks:
New research shows babies have a handle on the meaning of different dog barks - despite little or no previous exposure to dogs.
Infants just 6 months old can match the sounds of an angry snarl and a friendly yap to photos of dogs displaying threatening and welcoming body language.
terrasig | May 5, 2009Bear with me this morning because I am growing very weary of my physician colleagues enduring all sorts of haranguing for being hateful, pharma shills who only want to cut, burn, and poison.
I was extremely fortunate, personally and professionally, to train in two clinical units with strong basic science programs. As such, I worked at the bench with MD fellows and we schooled each other on our respective strengths. I loved when when my colleagues would come back from clinic and tell me of experiences that put our bench work in real world perspective. Yes, not all bench work is immediately…
thusspakezuska | March 15, 2009This past Friday morning, as per my usual routine, I sat down to read the Philadelphia Inquirer with my coffee and breakfast. And I came across an article that nearly made me vomit back all that delicious Toy Cow Farms blueberry yoghurt I had just spooned down. I refer, of course, to the piece on the "quaint Victorian home" shared by Darla, Chelsea, and Coco Puff.
Their dwelling has a cedar-shake roof, vaulted ceilings, and hardwood floors, heating and air-conditioning, moldings and casement windows, drapery with valences, and fanciful wallpapers.
At Christmas, music from the RCA Victor…
razib | February 19, 2009Sheril's post, Chimpanzees Are NOT Pets!, is good. She notes:
1 Chimpanzees are wild animals. Animals that make good PETS like dogs and cats, have been domesticated for [thousands] of years. There has been selection on them against aggression, which is why a dog, unlike a wolf, will not automatically tear you to pieces. Anyone who has a pet chimpanzee for long enough will eventually no longer be able to control them and will either get a body part bitten off or will have to use extreme force to control them. Chimps live to be 50 years old and grow almost as big as a human male. They have…
grrlscientist | January 5, 2009tags: dog, pets, animal behavior, training, streaming video
This amazing video shows what must be the world's most obedient dog [1:22]
grrlscientist | December 29, 2008tags: christmas, dogs, pets, cute, streaming video
Dog lovers will especially enjoy this video even though it is a few days late [3:19]
grrlscientist | December 16, 2008tags: Bailey the SnowDog, funny, humor, pets, dogs, streaming video
This amusing little video features Bailey the snowdog and "Rudolph the Reindeer" by Harry Connick Jr. [2:36]
The cinematographer writes;
I shot this video on VHS-C in my backyard, near Ward, Colorado (8,700' elevation) during a blizzard in the late 1990's; a local weatherman said it was the most measureable snow (if memory serves, it was 54" in 48 hours) from the least amount of moisture ever. Cheers to dogs, and to all those that love them! Please be well and Happy Holidays!!!
grrlscientist | December 12, 2008tags: the weiner dog song, humor, cute, streaming video
This silly video is all about Dachshunds .. it includes a song, too [0:38]
terrasig | October 11, 2008Nobel Prize month also means that Denver's 5280 magazine has announced the annual results of their top 270 medical professionals in 79 specialties. While the picture here is the cover of last year's issue featuring my dear colleague, Dr John J (Jay) Reusch, the good doctor was again named among the top six physicians in Cardiovascular Medicine. Our other compatriot, Dr Daniel (Dan) Bessesen was named for the sixth year among the top specialists in Endocrinology, Diabetes, & Metabolism.
Even my former pulmonologist, Dr James (Jim) Good, made the list - for his 14th year! The Pulmonary…
sporte | September 23, 2008Every fall, we had to confront it. People would let their dogs run around on the field in the morning and by the time soccer practice started, the field would be full of deadly doo.
There's nothing that hurts soccer practice more than a soccer ball or shoes that went through a pile of dog poo.
That's why I'm so exciting to see this new application for DNA testing. That's right. Kids will be able to play soccer without worry and dog owners will be held responsible for cleaning up after their pets.
The forward thinking city that's going to implement this plan is Petah Tikva, in Isreal.…
sporte | August 12, 2008Ancestry tests aren't just for humans anymore. We went to Petco this weekend to buy dog food and found brochures for doggy DNA testing. Now, those of you with dogs of uncertain parentage need puzzle no longer. According to Petco, their SNP test (what is a SNP?) can identify over 100 different breeds and they'll tell you which breeds are represented in your dog and whether your dog's breeding is mixed (or pure).
The brochure from Petco also claims that knowing something about your puppy's parentage could be helpful in understanding their behavior and potential health risks. That's probably…
sporte | August 7, 2008Leave it to those wacky Korean cloners. In December, scientists from Gyeongsang National University gave us fluorescent kitties. Now, we have cute little puppies!
These aren't the first cloned pets on the market, we have stores that sell glowing fish. But these clones have a bit higher price tag. For $50,000 Bernann McKinney got 5 new "Boogers" from RNL Bio; "Booger McKinney," "Booger Lee," "Booger Ra," "Booger Hong and "Booger Park." That's $10,000 a Booger!
Still, who can resist these cute little boogers? I have a picture of the puppies below the fold and as you can see, they're…
terrasig | July 16, 2008While I threaten to come back to real blogging, let me direct you to Orac's recent post on the loss of their family dog, Echo - the dog who ate corn off the cob (YouTube evidence therein).
Orac is a great writer but a lot of you know him mostly from his expertise in cancer medicine and in decrying all kids of pseudoscience. He may also seem on the surface to be a tough, unflappable medical professional, as one might expect from any high-powered academic surgeon.
However, I've had the pleasure of getting to know Orac personally and will divulge that he is really a sweetheart of a guy. And as…
sporte | June 20, 2008
"Let this sleepin' dog lie, son. Dog-gone it, I'm dog tired. I'm tired of leading the dog's life and fightin' likes cats and dogs against cats and dogs, a young pup's doggin' my trail tryin' to become top dog. I'm going to the dogs in a dog eat dog world, son. I... I'm so far over the hill... I'm on the bottom of the other side. "
- Wylie Burp from Fievel Goes West
I don't know why I find these stories about cloning puppies so interesting, but...
Someone sent me a press release on a dog fight between cloning companies.
It turns out that there's a third company, from South Korea, that's…
sporte | June 16, 2008Pet cloning is back!
Pets are funny things. Some owners find their pets to be closer than some human friends, other owners never really bond with their pets at all.
BioArts, a California biotech company, founded by ex-CEO of the now defunct Genetic Savings & Clone, is counting on the strength of those human-dog emotional bonds .
I've had several pets during the course of my life; dogs, cats, fish, scorpions, spiders, frogs, turtles, gerbils, and a hermit crab. Some pets were really easy to train and live with and some - well, let's just say some were more challenging. So, I…
zooillogix | June 13, 2008"Toad licking" has been well documented around the world with secretions from many species causing intense hallucinations. In this 2006 NPR podcast, they tell the story of a poor cocker spaniel who became addicted to toad. "We noticed Lady (the cocker) spending an awful lot of time down by the pond in our backyard. Late one night after I'd put the dogs out, Lady wouldn't come in. She finally staggered over to me from the cattails. She looked up at me, leaned her head over and opened her mouth like she was going to throw up, and out plopped this disgusting toad." Increasingly Lady would return…