A flurry of posts on Facebook in mid-June alarmed users about harmful algae blooms (HABs) caused by cyanobacteria in Lake Mendocino. The posts described an incident in which a dog died of neurotoxin poisoning after swimming in the lake. The poster was furious that no signage appeared at the lake about the dangers for pets. … The dog owner or someone else from the public filed a formal complaint with the Army Corps of Engineers, which manages Lake Mendocino. The Army Corps performed tests in late June. Said the Corps, “Last week, water samples were collected from the South Boat Ramp, North Boat Ramp, and Pomo-A Swimmers Area. The good news is that while some cyanobacteria are present, the levels found were low, and we didn’t detect any of the common toxin-producing cyanobacteria.”