Octopuses
Why would any animal need multiple hearts and brains? We can find out by studying these tentacled dwellers of the deep, which have three hearts – two to pump blood to its gills and one to pump blood to the remainder of its body. And also an astounding nine (!) brains – one that serves as its central control station, and eight others that are actually “large ganglion[s] at the base of each arm which control…movement,” explains the Daily Catch.
Frogs
Literal freezing is definitely not recommended for humans or other mammals, since it leads to, well, death. But for a species of Alaskan wood frog, freezing (mostly) solid, with two-thirds of their bodies turning to ice, as reported by the Los Angeles Times, allows them to withstand brutal winters and live until the spring. At which point, they thaw and carry on with their existence. Head here to find out how to choose the perfect pet for your family.
Houseflies
The common household nuisance (Musca domestica) may not have any vocal cords (actually, no insects do). But that doesn’t mean it can’t make any noise. By flapping its wings 190 times per second it makes a sound at a frequency that “the human ear interprets…as a pitch along the F major scale.” Check out these 13 tricks to keep bugs away from picnics.