Life Lines by Dr. Dolittle

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Tag Archive for ‘brain’

Intelligence: Dogs vs Cats

A new study seems to have provided an answer to the age-old question of who is smarter: dogs or cats? The speculation before the study was conducted was that hunting may require extra brain cells (neurons). If true, that would mean that cats would have more neurons than dogs. My apologies to all of the cat lovers out there. The findings from the study suggest that dogs may actually be […]

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Sheep can recognize human faces

New research published in Royal Society: Open Science shows that it is possible to train sheep to distinguish between different human faces shown in photos.  In fact, 8 out of 10 times, the sheep were able to choose the image they had been trained to recognize. According to study author Dr. Jenny Morton, “…sheep have advanced face-recognition abilities, comparable with those of humans and monkeys.” Because these animals are rather […]

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How Ossabaw Island swine are helping us understand obesity and diabetes

         Ossabaw Island off the coast of Georgia (United States) is home to feral swine brought over by early Spanish explorers. In relative isolation on the island, with the exception of the introduction of a Hampshire pig, the Ossabaw pigs have become genetically distinct from those living on the mainland. Ossabaw pigs are prone to obesity and are the only miniature pigs known to develop type 2 […]

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#1: Is there an evolutionary advantage to “being stupid”?

And the #1 blog entry published thus far in 2017 discussed whether there was an evolutionary advantage to being stupid: —- As I was looking through the scientific literature the other day, I came across an article published in 1973, “The Evolutionary Advantages of Being Stupid.” With a title like that, how could I not read it? In this article Dr. Eugene D. Robin discussed how larger and more complex brains are […]

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Meet the star (nosed) of the show

  Dr. Kenneth Catania from Vanderbilt University presented his work with star-nosed moles at the Experimental Biology meeting last month in Chicago. These animals are really cool. Here are some facts from Dr. Catania about these crazy-looking creatures you may not know: If participating in a bug-eating contest, they would win hands down every time because they are the fastest-eating mammal known. In fact, they can identify and consume a bug in a […]

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Improved cognition in male turtles exposed to BPA during development

Bisphenol A (BPA) has earned a bad reputation as a potential endocrine disrupting chemical in several studies of developing animals. Some studies even report correlations of BPA levels with certain diseases in humans. Thus it is not surprising there are a plethora of BPA-free food containers, especially for baby food and bottles, as our most common route of exposure is through our diet. It gets there from the epoxy resin lining of some canned foods as […]

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Ammonia tolerance of goldfish

Liver failure or congenital defects can lead to a build-up of ammonia in the brain of mammals resulting in life-threatening swelling, convulsions and comas. For goldfish (Carassius auratus), environmental exposure to ammonia causes reversible swelling of the brain. In a new study published in the American Journal of Physiology – Regulatory, Integrative and Comparative Physiology, researchers wanted to explore how the fish were able to accomplish this. They exposed goldfish to high […]

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