Should your dog be suffering from something that makes it itch and scratch continuously, then it's time to get hands on with the pet. A close observation and manual examination of the skin by separating the hair should give you an immediate indication of what is ailing your dog. Ticks, lice, or other nasty parasites may be difficult or impossible to see from even a short distance. Relieving your pet of this problem should get its appetite back to normal. dog not eating