- Psyduck, along with Golduck, has appeared in every regional Pokédex. This is due to the Unova Pokédex's expansion in Black 2 and White 2.
- Psyduck is one of fourteen Pokémon that one could collect foreign Pokédex entries for in Pokémon Diamond and Pearl.
- Psyduck requires the most loops with the Capture Styler to be captured in Pokémon Ranger, surpassing even Metagross.