If your poor pooch just returned from an operation with the vet, he's going to need a lot of extra TLC. The road to recovery is rough but with some help on your part, your canine baby will be better in no time.
Ask your vet to prescribe a pain medication for your dog post-surgery. Even if they do not do so routinely, you can still request medication to use in case your dog is in pain.
Similarly, you can ask your Vet about alternative holistic aids to help your dog heal such as the homeopathic remedy Arnica or the use of a topical Calendula cream directly on the wound.
A simple hot water bottle under your dog's sore spot can be a relief. This is especially useful in the case of orthopedic, bone or joint surgery. Gently place the hot water bottle on your dog's pillow and allow him to make himself comfortable on it or slip it gently underneath him. Don' force it.
Most importantly, your dog should remain as immobile as possible. Do not allow him to use stairs, jump on the couch or run and play outside. Instead, set up a safe clean area for him in a corner of the house and take him outside on a leash to ensure he does not take off running.
Make sure he has plenty of water available to him. Though he is less active and eating less he will be very thirsty when recovering from the surgery.
Make sure your furry friend does not chew on or lick his sutures, bandages or splints. This may require that he wear an "Elizabethan" collar when you can not keep an eye on him. You can find a variety of these lampshade-like collars at most pet stores.