Colorado veterinarians are issuing urgent warnings as toxic algae blooms explode across state waters—with some dogs dying within minutes of exposure. “These aren’t your garden-variety pond scum,” experts warn. “This is nature’s nerve gas.”

The Colorado Department of Public Health and Environment, backed by emergency veterinarians statewide, is sounding the alarm about cyanobacteria—microscopic killers masquerading as harmless algae. These organisms are transforming Colorado’s pristine waters into toxic death traps for unsuspecting pets.

“The signs of blue-green algae poisoning tend to be quite sudden and abrupt. We’re talking about dogs going from playfully swimming to fighting for their lives in under an hour. There’s no margin for error here.”

— Dr. Michele K., DVM, Emergency Veterina

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