Red, blue, green, even purple--animal blood comes in a wide range of colors! Check out these 10 amazing types of animals with blue blood.

Their yellow blood contains vanadium, which helps them transport oxygen. Their blue blood, containing hemocyanin, aids in oxygen transport in various habitats. They have a unique circulatory system ...

Pompeu Fabra University (UPF) and the Royal Veterinary College of London have worked together on a pioneering project ...

We examined the rat and noted a 5-mm-diameter round mass on the plantar surface of the left hind limb. The mass was firm and grayish-red in color and had visible blood vessels coursing across its ...

Similar to octopuses, squids also have three hearts. These marine creatures have four hearts. While not technically "hearts," they have multiple heart-like structures called aortic arches that help ...

including prevention of accidental transmission through blood transfusion and organ transplant and large-scale screening to prevent the entry of diseased animals into the food supply.