Natural selection has played a role in the development of the many skins patterns of the tiny Ranitomeya imitator poison dart frog, according to University of Montreal biologist Mathieu Chouteau.

As climate change causes temperatures to rise, the number of herbivores will decrease, affecting the human food supply.

A little information can go a long way when it comes to understanding rodent-borne infectious disease, as shown by a new study led by scientist John Orrock of the University of Wisconsin-Madison and colleagues.

What sets mankind's closest relatives — monkeys, apes, and other primates — apart from other animals? According to a new study, one answer is that primates are less susceptible to the seasonal ups and downs — particularly rainfall— that take their toll on other animals.

The nine-month pregnancy in humans is influenced by the structure of the placenta.