Tapeworms in dogs require immediate treatment. Leaving untreated, these parasites can lead your pooch to uncomfortable situations. This nasty parasite body has segments, and each segment has its own reproductive organ, which means it can increase its number rapidly. If you do not properly and timely treat the tapeworms in your dogs, your faithful companion will develop scooting and can suffer from some of the side effects such as vomiting, diarrhoea, anaemia, weight loss, lethargy and ugly dull coat.