My dog quickly scratches each side of his body then sits and licks his private and his anal opening. Could it be worms?

He did have an anal sac a few weeks after we got him about 6 months ago. It quickly protruded and then popped in a matter of 3 hours. After doing research I figured it was from an un-emptied anal gland. Would needing his anal glands emptied cause him do this or could he have mites or worms inside him? He does not have fleas and he is a 5 year old chihuahua.

Asked by Member 1150865 on Jan 19th 2013 Tagged scratching, licking, worms, mites, glands, strange in Health & Wellness