Pour water into a large pitcher.

Place blueberries into a plastic zip-top bag. Press the blueberries until they pop, using a rolling pin or your hand. Pour the pressed blueberries into the water.

Allow the water to sit for at least an hour.

When serving the water to dogs, use a strainer to be sure that no blueberries get into their bowl. This is to prevent a choking hazard.

You can put the strained blueberries back in the pitcher.

After 24 hours, strain out the blueberries or the water will become bitter.

Store the blueberry-infused water in the refrigerator.