
07/28/2025
Spending time at the lake is a great way to enjoy Alberta’s summer, but it can come with hidden risks for your pets. When blue-green algae (also known as cyanobacteria) show up in the water, it can be dangerous, especially for dogs.
These algae blooms often look like green scum, paint, or pea soup floating on the surface. They can release toxins that are harmful and sometimes deadly to pets that drink the water, swim in it, or lick the algae off their fur afterward.
Even a small amount can make your dog seriously ill. Symptoms can include vomiting, diarrhea, weakness, tremors, or seizures. Keep an eye out for these signs, and check the water before letting your pet jump in.