It lures people in with its Poké Ball pattern, then releases poison spores. Why it resembles a Poké Ball is unknown.
For some reason, this Pokémon resembles a Poké Ball. They release poison spores to repel those who try to catch them.
It lures Pokémon with its pattern that looks just like a Poké Ball then releases poison spores.
It lures Pokémon with its pattern that looks just like a Poké Ball, then releases poison spores.
No one knows what the Poké Ball–like pattern on Foongus means or why Foongus has it.
— Pokédex entries (via PokeAPI)