Any light-colored dog can be dyed using Kool-Aid, no matter what size or breed the dog is. Darker hued dogs can be dyed as well, but the color will be much darker than expected, or may not show up at all. Black, dark brown and dark gray dogs will not show much of a color change when Kool-Aid is applied. A small dog can be dyed in the sink; a large breed may require a kiddie pool or big tub. Your dog should be clean and dry before beginning for best results.
Fill the tub or sink with warm water.
Add the Kool-Aid and stir with a wooden spoon to blend.
Place the dog in the water.
Use the plastic cup to pour Kool-Aid over your dog's shoulders and back. The dye will work best is you can immerse your dog for 5 minutes; some dogs will enjoy this more than others.
Drain the tub and refill it with warm water. Pour warm water over the dog to remove extra dye. Drain the tub and allow your dog to air dry on a porch or patio.