An abnormal birth in bovine suspected of being caused by Peaton virus first occurred in Shikoku region, Japan.

Peaton virus (PEAV) is a type of arthropod-borne virus (arbovirus) belonging to the genus Orthobunyavirus, much like Akabane virus and Aino virus. These arboviruses cause stillbirth and congenital malformations of fetuses in ruminants. In Japan, abnormal birth in bovine caused by PEAV were reported in Okinawa, Kyushu, and Chugoku regions, but it has never been reported in Shikoku region.

An outbreak of rabbit hemorrhagic disease (RHD) caused by Lagovirus europaeus GI.2/rabbit hemorrhagic disease virus 2 (RHDV2) in Ehime, Japan.

A total of ten 1-2-year-old rabbits died within 2 weeks at a facility in Ehime prefecture in May 2019. Necropsy revealed liver discoloration and fragility, hemorrhage of some organs and blood coagulation failure. On histopathologic examination, necrotizing hepatitis was a common finding, together with fibrin thrombi in the small vessels and hemorrhage in some organs.

Complex carcinoma of the mammary gland in a free-living Japanese raccoon dog (Nyctereutes procyonoides viverrinus).

A complex carcinoma of the mammary gland was diagnosed in a free-living old female Japanese raccoon dog (Nyctereutes procyonoides viverrinus). Invasion into lymphatic vessels and metastasis in the inguinal lymph node were observed. This is the first report of complex carcinoma of the mammary gland in a raccoon dog.