I let my dog swim in the lake three days after the green film had gone just to cool him down: the evening the vet asked if he’d licked his coat dry, I understood what the water was still holding
After a harmful algal bloom cleared from a lake, one owner let her dog swim, believing the water was safe again. Three days later, a vet’s question revealed a terrifying truth: the toxins that kill dogs can persist long after the visible green film disappears. This is what every pet owner near lakes needs to know.