Rhinoceros beetles, aptly named for the unique horns on the male’s heads, can be found on most continents, and are often collected as pets. Male beetles use their horn to chase off other males during the breeding season. Sometimes their horns will even break during these competitive fights!

Sketch by @thandaart

[Edited by Isabelle McDonald]

Reference:

McCullough, E. L. (2014). Mechanical limits to maximum weapon size in a giant rhinoceros beetle. Proceedings of the Royal Society B: Biological Sciences, 281(1786), 20140696. https://doi.org/10.1098/rspb.2014.0696