Physical differences exist between male and female flamingos. Differences can be subtle, however, making gender determination difficult.

Paleontologists have long wrestled with how to differentiate between male and female dinosaurs based on their fossils.

While both are arachnids and spine chilling to behold, there are many differences between a male vs female black widow spider ...

A man who was born with male and female genitalia knew he was different but didn't find out the truth for five decades. When ...

It has been a busy summer for the captive breeding programs at your Guam Department of Agriculture. Aviculture staff for the ...

Male and female black widow spiders exhibit striking sexual dimorphism. Females are significantly larger, darker, and possess ...

Compare super chef Guy Fieri with the ruby-crowned kinglet; you may think they are one and the same. These birds are really ...

We used to think the ‘sex’ of an animal was clearly defined by its chromosomes. But it’s way more complicated than it seems.

Animals in children's stories are often depicted as living in neat mom, dad and children family units. Examples include ...

Plans for a 230-mile transmission line threaten Nevada’s wilderness and have united hunters and wildlife groups ...

At the Celery Fields and in woodland areas like Pinecraft Park, you’ll spot numerous kinds of birds, from jaw-droppingly ...

The main challenge for the Democrats is that they hate the people they want to appeal to. They don’t want to win men over, much less compromise with them. They want to shut them up and teach them to ...