Brain & Behavior

Another new study published in Nature Communications shows follows along with the prior post and shows that ancestral dogs were ambush hunters that evolved from forest dwelling animals similar to a mongoose (or a cat).  An international team of researchers studied archived samples of elbows and teeth of multiple species of dogs that lived between 40 – 2…

Proof cats outcompete dogs?

New research suggests that cats may have played a role in the extinction of about 40 species of wild dogs by simply out-hunting them and therefore consuming more food. The study noted that dogs first appeared in North America around 40 million years ago and by 22 million years ago there were over 30 species of wild dogs. Cats arrived…

“I Spy Physiology”

I came across the “I Spy Physiology” blog today from the American Physiological Society. The blog focuses on physiological topics relevant to daily life. There are also a couple of comparative physiology gems in the blog that you can view using the links below: How birds my help us understand diabetes How research on walking stick…

Research published in the Journal of Experimental Biology shows that noisy humans are impacting the physiology and behaviors of dolphins and whales. To compete against man-made noises, these animals are altering the amplitude, frequency or length of their vocalizations or repeat what they need to say with the hope of being heard. Dr. Maria Holt and colleagues studied a par…

Superstorm Sandy came ashore nearly three years ago, pummeling the New England and Mid-Atlantic coast and becoming one of the deadliest and costliest storms to ever hit the U.S. This week, the Sandy Child and Family Health Study released two new reports finding that the health impacts of Sandy continue to linger, illustrating the deep mental footprint left by catastrophic disasters and the challenges of long-term recovery.

Exposing Siberian hamsters (Phodopus sungorus) to shorter photoperiods (think winter) for about two months causes the animals to spontaneously undergo daily bouts of torpor during which time they decrease metabolic rate to conserve energy.  New research published in the American Journal of Physiology – Regulatory, Integrative and Comparative Physiology was designed to examine whether decreases in growth hormone secretion…

Death by boa constrictor

New research from Dr. Scott Boback and colleagues at Dickinson College (Pennsylvania) shows that boa constrictors do not use suffocation as a primary means of killing their victims. Rather, by measuring blood pressure and heart activity of the prey, they were able to determine that the snakes restrict blood flow in their victims causing circulatory arrest and a…

Polar bear survival during summer

If you happen to be in the Arctic this summer polar bears (Ursus maritimus) can be spotted spending their time on the sea ice or on the shore in areas where ice has melted. While it is difficult to study the physiology of bears living on the ice, it had been hypothesized that bears living on shore experience…

Every day in the U.S., more than 40 people die after overdosing on prescription painkillers. Deaths from a more notorious form of opiates — heroin — increased five-fold between 2001 and 2013. Addressing this problem — one that’s often described as a public health crisis — requires action on many fronts, from preventing abuse in the first place to getting those addicted into treatment. But when it comes to overdoses, there’s one answer we know works: naloxone.

Sailing Spiders

Research published July 3 in the journal BMC Evolutionary Biology supports the idea that some species of spiders can catch the wind to “sail” across bodies of water, which they suggest might be why certain spiders seem to be all over the world. While some spiders were already know to catch the breeze to travel by air relatively…