Check out other stories in this series here. Did you know that heart structures vary across species? Mammals, like ferrets and humans, have four-chambered hearts. Birds also have four-chambered ...

The CVC in the ferret has a diameter of 3.0–3.5 mm and is the main vessel located cranial to the heart. The external and internal jugular veins are joined by the subclavian vein, which enters ...

The black-footed ferret could also be called the black-eyed ferret because of the distinctive “stick-em up” mask that adorns its face. The tan ferrets also have black markings on their feet ...

In the early 1900s, the United States was likely home to more than 5 million ferrets. But ferrets, which hunt prairie dogs for food and live in their burrows, were almost wiped out early in the 20th ...