no they aren't. T.hey are not protostomes either deuterostomes
A tapeworm in a dog is called the same thing, a tapeworm. The most common kind of tapeworm found in dogs is the Dipylidium Caninum, which is the cucumber tapeworm or double-pore tapeworm.
any invertebrate animal with a three-layered body and a pseudocoel
coelomate
Pseudocoelomate is the word used for an animal with an unlined body cavity made up of a tube surrounded by organs. A roundworm is one example of a pseudocoelomate.
a tapeworm is a parasite, BAD!
The tapeworm is in the animilia kingdom 
The tapeworm is in kingdom Animalia
Yes, a tapeworm is an organism.
dwarf tapeworm is one
A tapeworm.
If you go into the water infested with tapeworms then the tapeworm can climb up your anus. If a woman is infected with tapeworm and the tapeworm hasn't gone into her intestines yet then the tapeworm might climb up your testicles if you have anal sex.
Therefore a tapeworm is a parasite.