Video: Courtesy YouTube National Geographic
Photo: Courtesy Wikimedia Commons
Posted in: Biodiversity, gray wolf, dogs
Tags: dogs, wolves, evolution of dogs, wolf research, National Geographic
Martin Clunes two part special called “A Man and His Dogs” is a must see. Clunes is a dog lover, English actor and comedian.
Showtimes: Smithsonian Channel HD (267) Direct TV
Origins Part One) Monday 4/26, 8am Mountain Time
Best Friends: (Part Two) 4/26, 9 am Mountain Time
Photo: Wikimedia Commons
Posted in: Dogs, canis lupus/gray wolf
Tags: dog origins, wolves in our living room, domesticated wolves, designer wolves
You know I can’t get enough of singing/talking Huskies. Here are Kody & Mya singing their hearts out to Gwen Stefani’s Sweet Escape. HOWLS!!
1.696,095 hits as of right now. Sweeeeeeeeeeeeeet!!
Posted in: Dogs
Tags: dogs, huskies, huskies remind me of wolves, singing huskies
Wolves Singing Along With Kody and Mya ♥
Posted in: Dogs
Tags: Mishka The Husky, lighthearted fun
Posted on October 8, 2008 by Maureen Anderson
Echinococcus granulosus is a tapeworm of dogs that causes a condition known as hydatid disease or hydatidosis in humans. The parasite is found in many parts of the world, and is very common in some regions of southern South America, the Mediterranean, the Middle East, southwestern Asia, northern Africa and Australia. To the best of our knowledge, E. granulosus does not occur in southern Ontario, but it is present in other parts of Canada including the western provinces and northern Ontario. A related, but much nastier, tapeworm called Echinococcus multilocularis is much less commonly found in North America. (*which is carried in foxes, coyotes, dogs and cats.)
A previous Worms & Germs post described what is known as the sylvatic cycle of Echinococcus granulosus, which is thought to be a common route of infection for dogs in Canada. In the sylvatic cycle, dogs become infected with Echinococcus by eating the internal organs (usually lungs and liver) of wild game such as moose and caribou. The dogs then pass tapeworm eggs in their stool, which can cause infection in other wild animals (thus continuing the cycle) or in people who accidentally swallow the eggs. In humans, Echinococcus forms slow-growing cysts (called hydatid cysts) in different organs of the body which can be very difficult to remove or treat in some cases.
Echinococcus also has a pastoral or domestic cycle. In this cycle, dogs acquire the parasite by eating the internal organs of infected sheep, and sometimes other livestock such as cattle and swine. This cycle is potentially very important in areas where there is a lot of sheep farming. In some areas of Latin America, 20-95% of sheep at slaughter may have evidence of hydatid cysts in their organs.
It is much more difficult to tell when a dog is infected with Echinococcus compared to other tapeworms such as Taenia or Dipylidium. An adult Echinococcus is tiny – only a few milimetres long (see picture right), very unlike the long, stringy white tapeworms that most people picture. Dogs can carry hundreds, even thousands of these tiny tapeworms without showing any signs of illness at all. The eggs can sometimes be difficult to detect on fecal examinations, and when they are seen they cannot be differentiated from Taenia eggs. Nonetheless, this is still the best way to detect infection, so fecal examinations should be performed regularly.
- In areas where Echinococcus is known to exist, it’s important to have your veterinarian perform fecal examinations on your dog’s stool more frequently than the usual once-a-year, because of the serious zoonotic potential of this parasite.
- Always wash your hands well after handling dog stools.
- Do not let your dog eat uncooked meat, or the organs from farm animals or wild game.
Dog Photos: Courtesy Wikimedia Commons
Posted in: Wolf Wars, wolf intolerance, Dogs
Tags: deworming, dogs, tapeworm, wolf hysteria, wolf persecution
An arabian wolf (Canis lupus arabs) in southern Israel (the southern Arava desert). It has been scavanging alone that night.
From Science Daily:
Small Dogs Originated in the Middle East
ScienceDaily (Feb. 23, 2010) — A genetic study has found that small domestic dogs probably originated in the Middle East more than 12,000 years ago. Researchers writing in the open access journal BMC Biology traced the evolutionary history of the IGF1 gene, finding that the version of the gene that is a major determinant of small size probably originated as a result of the domestication of the Middle Eastern gray wolf.
Melissa Gray and Robert Wayne, from the University of California, Los Angeles, led a team of researchers who surveyed a large sample of gray wolf populations. She said, “The mutation for small body size post-dates the domestication of dogs. However, because all small dogs possess this variant of IGF1, it probably arose early in their history. Our results show that the version of the IGF1 gene found in small dogs is closely related to that found in Middle Eastern wolves and is consistent with an ancient origin in this region of small domestic dogs.”
Previous archeological work in the Middle East has unearthed the remains of small domestic dogs dating to 12,000 years ago. Sites in Belgium, Germany and Western Russia contain older remains (13,000-31,000 years ago), but these are of larger dogs. These findings support the hypothesis put forward by Gray and colleagues that small body size evolved in the Middle East.
Reduction in body size is a common feature of domestication and has been seen in other domesticated animals including cattle, pigs and goats. According to Gray, ”Small size could have been more desirable in more densely packed agricultural societies, in which dogs may have lived partly indoors or in confined outdoor spaces.”
Photo: Wikimedia Commons
Posted in: dogs descended from wolves, gray wolf/canis lupus
Tags: small dogs, Middle Eastern gray wolf, genetics