Pet Inhaler Spacer for Cat or Dog Hand Spacer with Exclusive Breath Indicator (Mask for Dogs)Used to give cats or dogs medication, veterinarian recommended and pet approved. With the breath indicator, you can easily count exactly how much medicine your pet is receiving. The breathing chamber works with most dosing aerosols and helps in administering dosing aerosol medication to your cats or dogs. The mask is designed for pets and ensures the fit of the mask. The mask for cats fits cats of any size. If your dog is small and weighs less than 20