Animals that start with "x": - Xenarthra - An order of mammals that includes sloths, armadillos, and anteaters.
- Xenops - A rainforest bird from the Americas.
- Xiaosaurus - A small, plant-eating dinosaur from the Jurassic period.
There are, in fact, two types of truffles. The French "Black Truffle of Perigord," and the Italian "White Truffle of Piedmont." Thus, truffles as a whole can be called neither "black," nor "white," as both are correct.
