Not my field, but this[1] is kind of related. It looks at a certain type of squirrel native to southern Africa that uses its tail as a parasol to provide shade.

Not my field, but this[1] is kind of related. It looks at a certain type of squirrel native to southern Africa that uses its tail as a parasol to provide shade. [1]: http://www.journals.uchicago.edu/doi/abs/10.1086/physzool.57.1.30155968 http://www.journals.uchicago.edu/doi/abs/10.1086/physzool.57...