Animals
Sweet
Cats cannot taste sweetness.
Yes. Cats lack a working sweet taste receptor because a key gene, Tas1r2, is broken. Lions, tigers and other cats share this trait, likely because they evolved as strict meat eaters.
Cats cannot taste sweetness.
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Animals
3
Octopuses have three hearts and blue blood.
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.
Animals
Cubes
Wombats poop 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.
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