Many non-Poison-type Pokémon can learn this move from the tutor in Platinum. It shares this trait with Seed Bomb, which many non-Grass-type Pokémon can learn from a tutor.
Octillery is the only non-Poison-type Pokémon to learn this move by level up.
None of the Pokémon that learn this move by level up have a secondary type.
It has the highest base power of all Poison-type moves.
Most of the Pokémon that learn this move via tutoring are Pokémon based on primates; in fact, every Pokémon that happens to be based on primates can learn the move, possibly referencing their tendency to attack natural enemies with chemical warfare.