| equid herpesvirus 5 | 15 | species | viruses | viruses | 10371 |
| equinurbia sipunculiformis | -3 | species | | helminths | |
| escherichia coli p12b | 1 | no rank | bacteria | bacteria | 910348 |
| euparyphium albuferensis | 5 | species | invertebrates | helminths | 231587 |
| eustrongylides tubifex | 6 | species | | helminths | |
| felicola subrostratus | 3 | species | invertebrates | | 160123 |
| feline adenovirus | 1 | no rank | viruses | viruses | 114408 |
| filaroides bronchialis | -3 | species | | helminths | |
| filaroides martis | 3 | species | invertebrates | helminths | 242447 |
| filaroides milksi | 5 | species | | helminths | |
| filaroides pilbarensis | -3 | species | | helminths | |
| filaroides rostratus | 2 | species | | helminths | |
| flavobacterium lindanitolerans | 1 | species | bacteria | bacteria | 428988 |
| giardia agilis | 3 | species | | protozoa | |
| giardia ardeae | 9 | species | invertebrates | protozoa | 5743 |
| giardia microti | 4 | species | invertebrates | protozoa | 61965 |
| giardia psittaci | 1 | species | invertebrates | protozoa | 187323 |
| gliocladium | 47 | genus | plants | | 62887 |
| gliricola porcelli | 1 | species | invertebrates | | 186203 |
| glutamicibacter mysorens | 5 | species | bacteria | bacteria | 257984 |
| gnathostoma turgidum | 2 | species | invertebrates | helminths | 61465 |
| goniocotes gallinae | 4 | species | | | |
| goniodes gigas | 4 | species | | | |
| gyalocephalus capitatus | 8 | species | | helminths | 1678061 |
| gyropus ovalis | -3 | species | invertebrates | | 209364 |
| habronema | 14 | genus | invertebrates | | 227890 |
| haematopinus bufali | -3 | species | | | |
| haematopinus suis | 10 | species | invertebrates | | 511927 |
| haematopinus tuberculatus | 2 | species | invertebrates | | 511928 |
| haemodipsus ventricosus | -3 | species | | | |
| haemoproteus danilewskyii | -3 | species | invertebrates | protozoa | 379419 |
| haplorchis microrchis | -3 | species | | helminths | |
| haplorchis pleurolocerca | -3 | species | | helminths | |
| hepatozoon | 32 | genus | invertebrates | | 75741 |
| hepatozoon cuniculi | -3 | species | | protozoa | |
| hepatozoon felis | 2 | species | invertebrates | protozoa | 294745 |
| hepatozoon griseisciuri | 5 | species | | protozoa | |
| hepatozoon musculi | -3 | species | | protozoa | |
| heterodoxus longitarsus | 1 | species | | | |
| heterodoxus macropus | 1 | species | invertebrates | | 145266 |
| heterodoxus spiniger | 3 | species | invertebrates | | 762516 |
| heterophyes equalis | -3 | species | | helminths | |
| heterophyes katsuradai | -3 | species | | helminths | |
| heterophyopsis continua | 3 | species | | helminths | 1193295 |
| hexamita pitheci | -3 | species | | protozoa | |
| hmo astrovirus a | -3 | species | viruses | viruses | 682382 |
| hoplopleura captiosa | 2 | species | | | |
| hoplopleura pacifica | 3 | species | invertebrates | | 186217 |
| hormonema | 16 | genus | plants | | 46635 |
| human bocavirus | 39 | species | viruses | viruses | 329641 |
| human cosavirus a | -3 | no rank | viruses | viruses | 586419 |
| human enteric coronavirus 4408 | -3 | no rank | viruses | viruses | 166124 |
| human klassevirus 1 | 1 | species | viruses | viruses | 655603 |
| human mammary tumor virus | 8 | species | viruses | viruses | 341730 |
| human picobirnavirus | 6 | species | viruses | viruses | 145856 |
| human polyomavirus 9 | 1 | species | viruses | viruses | 943908 |
| human stool-associated circular virus ng13 | -3 | species | viruses | viruses | 743300 |
| human tmev-like cardiovirus | 2 | no rank | viruses | viruses | 511755 |
| isospora burrowsi | 3 | species | | protozoa | |
| isospora canis | 9 | species | | protozoa | |
| isospora orlovi | 1 | species | invertebrates | protozoa | 253631 |
| j-virus | 17 | species | viruses | viruses | 322067 |
| khalilia buta | -3 | species | | helminths | |
| khalilia pileata | -3 | species | | helminths | |
| khalilia sameera | -3 | species | | helminths | 1115655 |
| klossiella equi | 5 | species | | protozoa | |
| la crosse virus | 40 | no rank | viruses | viruses | 11577 |
| lapine rotavirus | 14 | no rank | viruses | viruses | 49892 |
| laribacter hongkongensis | 11 | species | bacteria | bacteria | 168471 |
| leishmania | 192 | genus | invertebrates | | 5658 |
| leishmania turanica | 2 | species | invertebrates | protozoa | 62297 |
| leptospira pomona | 23 | species | | bacteria | |
| leucocytozoon anatis | -3 | species | | protozoa | |
| leucocytozoon bonasae | 3 | species | | protozoa | |
| leucocytozoon mansoni | -3 | species | | protozoa | |
| leucocytozoon marchouxi | 3 | species | | protozoa | |
| leucocytozoon sakharoffi | 2 | species | | protozoa | |
| leucocytozoon schoutedeni | 2 | species | invertebrates | protozoa | 393989 |
| linognathus africanus | 3 | species | invertebrates | | 511940 |
| linognathus ovillus | 2 | species | invertebrates | | 511941 |
| linognathus pedalis | 2 | species | | | |
| linognathus setosus | 6 | species | | | |
| linognathus stenopsis | 2 | species | | | |
| linognathus vituli | 10 | species | invertebrates | | 186220 |
| lipeurus caponis | 4 | species | invertebrates | | 236522 |
| litomosoides carinii | 26 | species | invertebrates | helminths | 6299 |
| longistrongylus | 8 | genus | | | |
| longistrongylus albifrontis | -3 | species | | helminths | |
| longistrongylus meyeri | 1 | species | | helminths | |
| macrocanthorhynchus catalinum | -3 | species | | helminths | |
| macrocanthorhynchus ingens | -3 | species | | helminths | |
| mammomonogamus auris | 1 | species | | helminths | |
| mammomonogamus ierei | -3 | species | | helminths | |
| mammomonogamus indicus | -3 | species | | helminths | |
| mammomonogamus loxodontus | -3 | species | | helminths | |
| mammomonogamus mcgaughei | -3 | species | | helminths | |
| mansonella semiclarum | -3 | species | | helminths | |
| mastophorus muris | 7 | species | | helminths | 1499391 |
| menopon gallinae | 4 | species | invertebrates | | 328185 |
| menopon phaestomum | -3 | species | | | |