Vancouver, Wash. – Clark County residents and dog owners who recreate in the Columbia River and along its shorelines should be on the lookout for a newly reported type of harmful algae that caused the death of a dog in October.
Benthic algae mats are typically attached to riverbeds or lakebeds, but pieces of the mats can detach and float on the surface of the waterbody or wash ashore. The algae mats can contain toxins that can make people and pets sick and can be fatal to pets.