Answer: pregnancy. Unlike most animals, it is the male seahorses that give birth to live young. A new study conducted at the University of Sydney and published in Molecular Biology and Evolution, found that the male seahorses not only carry out the pregnancy, they also supply nutrients to the developing embryos, including fats and calcium. The researchers suspect…

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…

Malnutrition during pregnancy is a major global health issue that leads to restricted growth of developing fetuses making them more prone to death and disease. In fact, babies born from poorly nourished mothers are more likely to develop obesity, metabolic syndrome and cardiovascular disease as adults. Researchers from the University of Colorado and University of Texas Health…

“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…

Top 10 extreme animals

I came across this highly entertaining video of the “Top 10 Extreme Forms of Life” on YouTube:

I came across this neat video from Mayo Clinic researcher Dr. Michael Romero, a comparative physiologist interested in how the kidneys work. In this video he describes discoveries made in zebrafish that relate to human kidney function:

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…

Ugly dogs

It is that time of year again to vote for your favorite “Ugliest dog”. I have a feeling it will be a close contest. To pick your favorite contender, click here. Honestly some of them are rather cute in their own way. I am rather partial to Rascal Deux and Icky…this will be a tough decision.…

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…