humans

'Tis the season. As we turn to the holidays, their spiritual meanings, and the liminal moment as we end another extraordinary pandemic year, we should take stock of our position. We should consider that a bit of DNA, far smaller than we can see, that we could not imagine until 1892 has brought the world to its collective knees. Where exactly do we stand in the grand scheme of life?
Your dog doesn't need to drink orange juice. There are evolutionary and biochemical reasons why humans need to consume vitamin C but dogs -- and many other animals -- do not.
A study of the dietary preferences of dogs and cats show distinct differences when palatability is constant. Are there lessons for us about our eating choices?
Evidence indicates that dogs can become infected with human-adapted influenza strains, making this incredibly concerning. When two different influenza strains infect the same host, the viruses can swap genes, a process known as genetic reassortment. This can produce devastating influenza pandemics.
The relative size of the human male's penis and testes can be reduced to our species' mating strategies, and can provide some surprising insights into early human culture.