Animals feed
Fat, not water
A camel's hump stores fat, not a tankful of drinking water. The reserve provides energy when food becomes scarce, while other adaptations help the animal manage water loss.
3
Octopuses have three hearts: two supply the gills and one supplies the rest of the body. Their oxygen-carrying protein contains copper and turns blue when oxygenated.
Cubes
Wombats produce distinctly cube-like droppings, shaped inside the intestine rather than by a square opening. Research links the shape to differences in the mechanical properties of the intestinal wall.