This is a test of commonsense. Complete the next sentence:

How to protect your dog around natural water sources
Refrain from letting your dog drink the water.
When you take your dog to outdoor water sources, you should prevent them from drinking the water as best as you can. Any outdoor water source may contain bacteria that can make your dog sick.
The water may contain chemicals that can make your dog sick. Keep your dog away from any blue-green algae.