Pies: Dogs have twice as many muscles to move

Evidence: 59 • authority: 72

The dog (Canis familiaris or Canis lupus familiaris) is a domesticated descendant of wolves. Also called the domestic dog, it was selectively bred during the Late Pleistocene by hunter-gatherers. Dogs and the modern gray wolf share a common ancestor. Dogs were the first species to be domesticated over 14,000 years ago, before the development of agriculture, though genetic studies suggest the domestication process may have begun over 25,000 years ago. Due to their long association with humans, dogs have gained the ability to thrive on a starch-rich diet that would be inadequate for other canids. Dogs have been bred for specific behaviors, sensory abilities, and physical traits. Dog breeds va…

Evidence: 49 • authority: 92

Automated analysis of emotional expressions in dogs based on geometric morphometrics.. Automated analysis of facial expressions is a vibrant field in human affective computing, while research in nonhuman animals is still in its early stages. Compared to labour-intensive manual coding, automation can provide a more reliable and objective alternative, eliminating subjectivity and bias. However, using automated approaches of facial analysis in nonhuman animals "in the wild", i.e. outside of controlled laboratory conditions, is a challenge given the nature of noisy datasets. Here we present the first study using a fully automated analysis of facial landmarks associated with different emotional…

Evidence: 49 • authority: 88

Functional trade-offs in the limb muscles of dogs selected for running vs. fighting. Abstract The physical demands of rapid and economical running differ from those of physical fighting such that functional trade-offs may prevent simultaneous evolution of optimal performance in both behaviours. Here we test three hypotheses of functional trade-off by measuring determinants of limb musculoskeletal function in two breeds of domestic dogs that have undergone intense artificial selection for running (Greyhound) or fighting performance (Pit Bull). We found that Greyhounds differ from Pit Bulls in having relatively less muscle mass distally in their limbs, weaker muscles in their forelimbs than t…

Evidence: — • authority: 88

How Many Dogs? How Many Chickens?. Students say some amazing things. Back Talk highlights the learning of one or two students and their approach to solving a math problem. Each article includes the prompt used to initiate the discussion, a portion of dialogue, student work samples (when applicable), and teacher insights into the mathematical thinking of students. This article describes the thought processes of two third-grade students who were given a problem involving finding the number of dogs and chickens on a farm when they know only the total number of legs. Their solution strategies include standard mathematical operations as well as pictorial representations.

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All about dogs; a book for doggy people. estimable advantage of his talented pencil, in portray- ing so many excellent, and truthful portraits of the " Lights of the Canine World," including more than sixty " Champions," of their respective varieties. I am not aware that such a number of Canine Celebrities has ever before been gathered together in one volume, and they represent some of the best pictures of dogs I have ever seen, even of Mr. Moore's, and, I think most dog lovers will acknowledge that he is particularly happy in hitting off the expressions, and catching the actual likeness of his subjects, most kindly taking up the matter for me, when very much pressed with other commissions,…

Evidence: — • authority: 72

The Whippet is a British breed of sighthound. It closely resembles the Greyhound and the smaller Italian Greyhound, and is intermediate between them in size. In the nineteenth century, it was sometimes called "the poor man's racehorse". It is commonly kept as a companion dog, for competitive showing or for amateur racing, and may participate in various dog sports, including lure coursing, agility, and flyball. It has the fastest running speed within its weight and size range, and is believed to have the fastest idle-to-running acceleration of any dog. Whippets are characterized by their gentle, affectionate, and calm temperament. While typically relaxed and serene at home, they exhibit high…

Evidence: — • authority: 72

Aging in dogs varies from breed to breed, and affects the dog's health and physical ability. As with humans, advanced years often bring changes in a dog's ability to hear, see, and move about easily. Skin condition, appetite, and energy levels often degrade with geriatric age. Medical conditions such as cancer, kidney failure, arthritis, dementia, and joint conditions, and other signs of old age may appear. The aging profile of dogs varies according to their adult size (often determined by their breed): smaller breeds have an average lifespan of 10–15 years, with some even exceeding 18 years in age; medium breeds typically live for 10 to 13 years; and giant dog breeds have the lowest minimu…

Evidence: — • authority: 80

Older people take twice as many drugs

Evidence: — • authority: 80

China may have twice as many overweight people as in 1991

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intrinsic muscles aid in movement. Like dogs , cats have sensitive ears that can move independently of each other. Because of this mobility, a cat can move its

Evidence: — • authority: 38