A crup bite causes the victim to bark like a dog for 48 hours (Pm:MACUSA).
During the 1760s when MACUSA was based in Williamsburg, Virginia, President Thornton Harkaway was in possession of a pack of Crups, creatures resembling Jack Russell terriers with split tails. Harkaway lost control of his pets and they attacked several No-Majs, which was considered a breach of the International Statute of Secrecy and caused the President to be thrown out of office (Pm).
From the Web
Pottermore: Magical Congress of the United States (MACUSA) by J.K. Rowling