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

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 ...

Genetically engineered breeders that lay only female chicks would eliminate the culling of day-old male chicks.

Fans of the birds, whose lives have been compared to Game of Thrones, are currently waiting with bated breath for this year's ...

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 ...

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

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

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

Rob Wilson, 64 has opened up about his life growing up Intersex - including his theory about how he came to be born with the ...

Benson Kipruto won the men’s race by three-hundredths of a second, and Hellen Obiri won the women’s race, obliterating the ...

“Certainly, diabetes and hypertension raise the risk of heart disease,” Dr. Graham said. But autoimmune conditions may also ...