Pine trees are one of the most common coniferous species in North America. Learn how to identify the types found in the United States and Canada.

While we might have a general idea about the size of common animals, the actual dimensions of many North American species can ...

The wonderful world of tennis is helping nature’s tiniest mammals survive. Each year, following Wimbledon, thousands of used ...

The most prevalent colors of animals in nature are brown, black, and grey. These colors are important for protection and ...

Hickory trees are prolific nut producers in North America. Learn about six of the most common species and how to identify each.

Homosexual behavior is much more common across the animal kingdom than we first thought, new research has found. Scientists found that 78 percent of animal behavior experts had seen some degree of ...

In other species, males will kill infants unrelated to them, an act known as infanticide. In these instances, such as with the North American red squirrel, males kill and eat pups who aren’t ...

Researchers have found evidence that a common North American spider species alters its webs to deal with urban noise pollution.

From dreams of winning the lottery to doing daily chores—a new survey has revealed what Americans are dreaming about.

In “Our Kindred Creatures,” authors Bill Wasik and Monica Murphy explore the origins of the animal welfare movement and follow the activists who influenced how we treat dogs and cats today.

Common species of North America are becoming harmful invasives in Europe.

(CNN) – New research shows homosexual sex between animals is more common than we think. Same-sex sexual behavior has been observed in more than 1,500 animal species. But, the new study shows it ...