Table 2.

Single and multiple infections of dogs with gastrointestinal parasites in Zanjan Province

	Parasite species	Number of positive dogs
Single infections
	Sarcocystis spp.	24
	Taenia spp./Echinococcus spp.	20
	Toxocara spp.	6
	Cystoisospora spp.	4
	Single Giardia spp.	4
	Spirocerca lupi	3
	infections Toxascaris leonina	2
	Dicrocoelium dendriticum	2
	Eimeria spp.	3
	Cryptosporidium spp.	2
	Physaloptera spp.	0
	Trichuris vulpis	1
	Acanthocephalans	1
	Cystoisospora spp.+ Giardia spp.	2
Multiple infections
	Toxocara spp.+ Physaloptera spp.	1
	Sarcocystis spp.+ Spirocerca lupi	3
	Sarcocystis spp.+ Toxascaris leonina	2
	Sarcocystis spp.+ Cystoisospora spp.	1
	Sarcocystis spp.+ Taenia./Echinococcus spp.	3
	Taenia/Echinococcus spp.+ Physaloptera spp.	1
	Taenia./Echinococcus spp.+ Dicrocoelium dendriticum + Toxocara spp.	1