It is one of the only three Pokémon that are unaffected by a sandstorm that isn't one of the three types that are immune to sandstorms, provided it has its natural ability, Sand Veil.
Cacturne appears to be a green Pokémon with green spikes surrounding its entire body. It also has yellow eyes with black marks surrounding it. It also has black dots making its mouth. It also appears to have a scarecrow hat, explaining it being the Scarecrow Pokémon. It has a cactus-like appearance and traits making like a Scarecrow Cactus.
Cacturnes have the ability Sand Veil and a hidden ability Water Absorb. Sand Veil prevents Cacturne from being attacked by sandstorms and raises its evasion 20% in sandstorms. Water Absorb prevents Cacturne from being affected by Water-type moves and restores its HP a bit when attacked by a Water-type move.