Effective immediately, Lufthansa will not transport 10 breeds of dogs (or mixed breeds thereof) in the cargo hold if the temperature exceeds 27°C or 80°F at the originating or destination airport. The affected breeds are: Boston Terrier, Boxer, Brussels Griffin, Bulldog (all breeds except American Bulldog), Chow Chow, English Toy Spaniel, Japanese Chin, Pekinese, Pug (all breeds), and Shih Tzu. Additionally, Lufthansa will require that the exact breed be listed on all pet transport documents. The restriction affects snub nosed dogs as their brachycephalic condition impairs breathing. Owners of these breeds should plan their pet travel during periods of cooler weather or avoid cities with higher temperatures.