Pluto is a dwarf planet haha. It doesn’t have a strong enough gravitational pull to be completely round. Plus pluto doesn’t have a completely oval path orbiting the sun. In fact, it cuts between uranus’ orbital path. Pluto has been demoted because it does not dominate its “neighborhood.” Charon, its large moon, is only about half the size of Pluto, while all the true planets are far larger than their moons.