These are different parasites that your dogs can get.
the direct link this is belwo. That way you can all have an idea as to which parasites to what and how common and rare they are. There are 5 types of tapeworm 1 common the rest are rare. But honestly you never know about the areas where you buy a pup from. Just like there are 2 different forms of coccidia.
http://groups.msn.com/Bully-OwnersAssociation/bullyhealth.msnw?action=get_message&mview=0&ID_Message=853&LastModified=4675598151845048581Parasites of the Dog
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Status in the Philadelphia region:
Common - seen regular (at least several times per year)
Uncommon - seen occasionally (once every year or two)
Rare - not seen or seen only once or twice in the last 15 years.
Ancylostoma brazilensis - rare
Anclystoma caninum - common
Babesia canis - uncommon
Babesia gibsoni - rare
Balantidium coli - rare
Baylisacaris procyonis - uncommon
Capillaria aerophila - uncommon
Capillaria boehmi - uncommon
Capillaria plica - uncommon
Crenosoma vulpis - uncommon
Cryptosporidium parvum - uncommon
Cuterebra spp. - common
Dioctophyme renale - rare
Dipetalonema reconditum - uncommon
Dipylidium caninum - common
Diphyllobothrium latum - uncommon
Dirofilaria immitis - common
Dracunculus insignis - rare
Echinococcus granulosus - rare
Echinococcus multilocularis - rare
Entamoeba histolytica - rare
Filaroides hirthi - rare
Oslerus (Filaroides) osleri - rare
Giardia duodenalis - common
Heterobilharzia americana - rare
Isospora canis - common
Isospora ohionensis - common
Leishmania spp. - uncommon
Macracanthorhynchus ingens - rare
Mesocestoides corti - rare
Nanophyetus samincola - rare
Neospora caninum - uncommon
Paragonomus kellicotti - uncommon
Parametorchius complexus - rare
Platynosomum fastosum - rare
Physaloptera spp. - uncommon
Sarcocystis cruzi - uncommon
Spirocerca lupi - rare
Spriometra mansonoides - rare
Strongyloides stercoralis - uncommon
Taenia hydatigena - rare
Taenia ovis - rare
Taenia pisiformis- common
Taenia multiceps - rare
Taenia serialis - rare
Thelazia californiensis - rare
Toxascaris leonina - common
Toxocara canis - common
Trichinella spiralis - rare
Trichomonas spp. - uncommon
Trichuris vulpis - common
Trypanosoma cruzi - rare
Uncinaria stenocephala - uncommon