Chippermunk is a tradeable pet that I bought from the NX cash shop which I believe is unintended. My alt was able to accept and use the pet and then trade it back to my main. (It resets the pet exp upon trade and the pet exp isn't restored when the original owner gets it back) Also, pressing cancel from this screenshot crashes the game for the person who's trading the pet. I saw someone else's thread mention the same crashing issue while attempting to trade the pet snail.