Their blood, bones, and even muscles are bright lime green not because of chlorophyll, but due to biliverdin, a bile pigment. In most animals, high levels of biliverdin are toxic.

Have you ever seen an animal with Blue Blood? While this may sound unusual, animals with blue blood do exist. While most vertebrates, including humans, have red blood cells due to hemoglobin ...

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 ...

Plasma is a straw-coloured liquid that makes up just over half the volume of blood. \( \text{haemoglobin} + {oxygen} \xrightarrow {at~the~lungs} \text{oxyhaemoglobin ...