>>45802788he explains it
https://www.youtube.com/watch?&v=EqzghgtJ1Is>And how is he differentiating between poison types?Sometimes, when the pokedex says "poison" it actually means "venomous"
Nidorans secrete poison with their skin, it would be very difficult, if not impossible, to isolate the edible meat without getting the toxin into it.
Snakes generally only inject venom with their teeth, but the meat is safe to eat.