Most dogs love a cool dip in a crisp, clean lake, river, or stream on a hot day. But before you let your dog take the plunge, be aware of a hidden danger lurking in some waterways; harmful algae blooms. While we encourage having your dogs swim, it is important to know what water sources may be affected by this algae. To learn more about this toxicity in dogs, click the link below to visit the Pet Poison Helpline. Let us know if you have any questions.