Poxxers are pig-like creatures used to generate vaccines for many illnesses. They are larger than normal pigs, with human-like hands and shorter snouts. They are known to sing and hum much like humans, usually with slow, sad dirges.
The animals are intentionally infected with many human and dwimmerling diseases, and the pustules develop are lanced and processed into vaccines. The creatures are not usually long-lived, suffering a short existence of pestilence before succumbing to one of their many ailments.