I can't remember the wolf-pigs I'm sorry (probably haven't got that far with the audio books ), but having just completed the Shadow Rising, I can advise the Ice Peppers were in there (with the Black Ajah forcing the Panarch Amathera to eat them, with everyone in city, including Bayle Domon, believing she loves them).

They seemed quite different to our peppers in colouring, so I assumed it was something that evolved.