The animal on the cover of Real World Haskell is a rhinoceros beetle, a species of scarab
beetle. Relative to their size, rhinoceros beetles are among the strongest animals on the
planet. They can lift up to 850 times their own weight. The average rhino beetle found
in the U.S. is about an inch long, but they can grow as long as seven inches.
Rhino beetles have horns on their heads, resembling that of the rhinoceros, hence the
name. The size of their horns is related to how much nutrition they had in larva. In
some species, the horns are longer than the bodies, and they can grow as many as four
or five horns. They use the horns for digging, as well as for fighting for territory and
Rhino beetles thrive on sap and rotting fruit, specifically bananas, apples, and oranges.
Their larvae, which takes between 3–5 years to mature, eat decaying wood, compost,
and dead leaves—a kind of recycling for the environment.