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Cute (and especially emotionally close for me as one of our cats has just been diagnosed with a growth under her tongue that's probably a tumor), but it's hard to find the back story. From what I can tell from the wayback machine, it's just a regular hedgehog that's gotten a little podgy. From further googling, it turns out a hedgepig is just a young hedgehog, I should probably have figured that out by myself. Nice pics, thanks.