>>58084201In the early games, there was possibly mention of real animals, and eating Pokémon like Fartfech'd or Crawdaunt, or animals transformed into medicine like Seadra and Parasect, was common.
But as the series progressed, it began to take on a tone more in line with its kodomo anime and forgot the scary or realistic tone of the beginning. Now, seeing Pokémon devouring each other is rarer, especially in a world where most pokemon can satisfy their needs with Berries or other sources like electricity, light, water, minerals, spiritual energy, dreams, etc. Furthermore, over time, real animals are disappearing. Check this out:
>>58082157 it may sound like a joke, but probably in the future there will be a mussel Pokémon, and there will no longer be a need to draw a real mussel. And to avoid controversy, explain that when it evolves, it abandons its shell, which is used by humans for cooking.
The point is that now all regions behave globally and share a certain degree of culture, so in modern times, it must be seen as barbaric to kill and devour a Pokémon.