You have to remember that our pets are just like people in many ways. Being spayed is a surgical procedure for your dog, she will feel just as you would after coming out of an operation. She may be drowsy and clumsy on her feet. Se will need a little extra TLC and may not have much of an appetite. She may be experiencing pan and will definitely be uncomfortable. Keep an eye on the incision and look for any redness, swelling or pus.