Look at the photo on the right and you can see that roundworms can assume different sizes. Tapeworms, meanwhile, will not be seen externally; in fact, all you might see in the stool or attached to the fur would be the small segments that detach from the end of the tapeworm. read more
They’re usually white or light brown and a few inches long. (They look like spaghetti.) If your dog has roundworms, you may notice them in his poop or vomit. read more