Brazil is investigating another four new potential cases of highly pathogenic avian influenza (H5N1) in wild birds, according to authorities from the state of Espirito Santo, where Brazil's first ever cases were confirmed this week.

Health and wildlife officials confirmed a dramatic rise in rabid foxes in Nome and the region, after a winter of increased fox attacks on dogs and people. According to an ADF&G press release, of 61 foxes that were dispatched in Nome and the area, 23 percent (or 14 foxes) tested positive for rabies. Of the 11 foxes that were found dead, or were killed by dogs or people because they behaved ‘rabid’, all tested positive.

The degenerative and fatal disease scrapie has been diagnosed in sheep at Bergsstaðir farm in Northwest Iceland. It is the first time the disease has been detected in the region, which will have an impact not just on Bergsstaðir but the entire district.

A pet dog in Oshawa has died after testing positive for avian flu, the Canadian Food Inspection Agency says. The CFIA says the number of documented cases of H5N1 — also known as avian flu — in other species like cats and dogs is low, and based on current evidence, the risk to the general public remains low.

Three young dogs were euthanized this week after testing positive for parvovirus, an Anchorage Animal Care and Control official said.