This huge African magical beast resembles a rhinoceros. Its horn, which can pierce almost anything, contains a fluid that explodes, destroying what it has hit.
Because male Erumpents frequently blow each other up during mating season, the species is somewhat endangered (FB). When Harry, Ron, and Hermione visit Xenophilius Lovegood he has an Erumpant horn on his wall, he believes the horn is one of a Crumpled-Horn Snornack. The horn blows up his house as the golden trio apparate out. (DH20, DH23)