Watched "Chupacabra", which I remember vividly from a TV screening, from Grimm. A young doctor comes home from a medical mission in the Dominican Republic. On his first night in Portland he morphs into the South American Chupacabra and kills a neighbor and his pet dog. The next evening he attacks three more people. Nick and Hank visit the doctor's wife and discover that she is  Wesen. The doctor arrives and is put in handcuffs. Nick and Hank take the doctor and his wife to the spice shop, where Rosalee mixes an antidote. There is only a dosage good enough for one, however. When the doctor's wife herself turns into a Chupacabra, the doctor administers the dosage to her instead of having it administered to himself. He morphs into a Chupacabra and attacks Hank, who shoots him down.

Sergeant Wu sees the Chupacabra twice within this episode and recalls all of the Wesen and weird cases that Nick and Hank have been on. He goes to a bar, gets drunk, smashes a mirror, attacks a patron, and ends up being incarcerated in a jail cell.

Monroe and Rosalee are about to leave for their honeymoon at a beach. Monroe brings a sandwich to a patrol officer whom Nick stationed outside his house. When the officer turns to him, however, he is wearing a mask of the Weisenrein. A second member of the Weisenrein knocks Monroe down.

Still experiencing discomforts akin to those experienced by pregnant women, Juliette looks at herself in her bathroom mirror--and morphs into a Hexenbiest.

Love that tawa-tawa, a Philippine herb, is an ingredient in the anti-Chupacabra potion.