-
 Many species
- Acanthocephala
- Thorny-headed worm
-
 Cattle, possibly sheep
- *Anaplasma marginale
- Rickettsiales
-
 Dog
- *Ancylostoma caninum
- Hookworm
-
 Horses
- Anoplocephala sp.
- Tapeworm
-
 Pig
- *Ascaris suum
- Pig roundworm
-
 cattle
- *Babesia bigemia
- Texas fever
-
 Dog
- *Bibesia canis
- canine piroplasms
-
 dogs, cats, cattle, sheep
- cryptosporidium parvum
- sporozoans
-
 Dog, cat
- *Dipylidium caninum
- Tapeworm
-
 Dogs, cats, ferrets
- *Dirofilaria immitis
- Heartworm
-
 cattle, sheep, goats (not egg in center)
- *Eimeria
- Large animal coccidia
-
 cattle, sheep, goats, pigs, rabbits
- *Fasciola hepatica
- liver fluke
-
all animals
- *Giardia lamblia
- protozoan
-
 dogs, cats
- *Isospora spp
- small animal coccidia
-
 cattle, sheep, goats
- Moniezia benedeni
- Tapeworm
-
 cat
- *Mycoplasma Haemofelis
- Rickettsiales
-
 Horses
-
 horse
- Parascaris equorum
- roundworm
-
 horses
- Strongylus stercoralis
- Threadworm
-
 horse
- *strongylus vulgaris
- large strongyle
-
 dog
- *Taenia pisiformis
- tapeworm
-
 dog
-
 cat
-
 cats, dogs
- *Toxascaris leonina
- roundworm
-
 dogs, sometimes cats
- *Trichuris vulpis
- whipworm
-
 dogs, cats
- *Uncinaria stenocephala
- northern hookworm
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