make sure to make his environment clean give him mask to wear to protect himself the pet should be cleaned washed vaccinated and checked up by veterinary doctor regularly avoid contact with pet for a few days too rule out of its because of pet warm water saline gargles stream inhalation bedtime will help Diet modification warm fluids does he have any breathing difficulty get investigated chest x Ray consult doctor and get physically examined what time does he have more cough How does it exaggerate keep head elevated at need to ease breathing lozenges