I’ve seen a couple leucistic gentoo penguins before, but this was my first time seeing one with melanism,” penguin counter ...

Unlike true melanism, which results in an entirely black coat, pseudo-melanism causes the tiger’s stripes to be thicker and closer together, giving the appearance of a darker coat. This mutation ...

This change from predominantly light to dark forms in industrial areas is called industrial melanism. Note that this change was not due to pollution making the moths darker. The dark variety had ...

Camera traps in a forest have caught video of two all-black wolves. Now scientists are investigating where they might have ...