Numerous in-game sources (NPCs, item descriptions, etc.) have made reference to how combining items with 'critters' can yield elixirs with a variety of effects. That sounds really neat.
The only problem is - I don't have any idea how to gather these 'critters'. I've noticed several types of animals, but none of them that I can seemingly just waltz up to. In previous Zelda games, you needed special items to interact with certain critters, but I've found no mention of that so far.
How do I capture confoundingly mobile elixir ingredients?