>>44159624Definitely. Pokemon are canonically food for people and other Pokemon. This is backed up both in dex entries and in actual in-game events like the slowpoke tails you mentioned.
Pokemon are fully real world animal equivalents and some are eater this element is just glossed over so people, especially children, don't need to come to terms with the fact that people might eat their favorites.
Just like in the real world though I doubt people eat every type of Pokemon, though I'm sure every single one has some form of natural predator in the wild.
