As per the question, Pluto has a shape that is nearly round and it orbits around the sun. The total number of moons of Pluto is five. But, Pluto is considered as a dwarf planet.
EXPLANATION:
Every planet in out solar system has cleared their neighborhood. They are independent on each other, and don't share their orbits with others.
Unlike other planets, Pluto has not cleared its neighborhood. It can share its orbit with other bodies having nearly equal masses that of Pluto.
Hence, Pluto is considered as dwarf planet.
