Nematodes (roundworms) are the most common parasites of cats and include:
| Parasite | Order | Location in cat | Geographical distribution |
| Abbreviata gemina | Physalopteroidea | stomach, small intestine | Europe, Africa |
| Aelurostrongylus abstrusus | Metastrongyloid | lungs | Worldwide |
| Anatrichosoma spp | Enoplida | skin | Asia, Africa |
| Ancylostoma braziliense | Strongyloidea | small intestine | Worldwide |
| Ancylostoma ceylanicum | Strongyloidea | small intestine | Worldwide |
| Ancylostoma tubaeforme | Strongyloidea | small intestine | Worldwide |
| Aonchotheca putorii | Enoplida | stomach | Northern Europe, North America |
| Bronchostrongylus sucrenatus | Metastrongyloid | lungs | Africa |
| Brugia beaveri | Filarioidea | lymphatics | South-East Asia, India, Africa, Central America |
| Brugia malayi | Filarioidea | lymphatics | South-East Asia, India, Africa, Central America |
| Brugia pahangi | Filarioidea | lymphatics | South-East Asia, India, Africa, Central America |
| Brugia patei | Filarioidea | lymphatics | South-East Asia, India, Africa, Central America |
| Calodium hepaticum | Enoplida | small intestines, liver | South America, Europe |
| Cyathospirura chevrauxi | Spiruroidea | small intestine | Worldwide |
| Cyathospirura dasyuridis | Spiruroidea | small intestine | Worldwide |
| Cyathospirura seurati | Spiruroidea | small intestine | Australia |
| Cylicospirura advena | Spiruroidea | small intestine | New Zealand |
| Cylicospirura felineus | Spiruroidea | small intestine | Australia, North America, India |
| Cylicospirura heydoni | Spiruroidea | small intestine | Australia |
| Cylicospirura seurati | Spiruroidea | small intestine | Australia |
| Cylicospirura subaqualis | Spiruroidea | small intestine | India, Africa, South America |
| Dipetalonema reconditum | Filarioidea | interstitium | Worldwide |
| Dirofilaria immitis | Filarioidea | heart | Worldwide |
| Dirofilaria repens | Filarioidea | connective tissue | Worldwide |
| Dirofilaria striata | Filarioidea | connective tissue | Worldwide |
| Dracunculus spp | Spiruroidea | skin | Northern Africa, Middle East, India, Asia |
| Eucoleus aerophilus | Enoplida | lungs | Worldwide |
| Gnathostoma procyonis | Gnathostomatidae | stomach | North Africa, India, South-East Asia, Australia |
| Gnathostoma spinigerum | Gnathostomatidae | stomach | North Africa, India, South-East Asia, Australia |
| Gurltia paralysans | Angiostrongyloidea | nervous tissue | North and South America[1] |
| Lagochilascaris major | Ascaridida | mouth, respiratory tract | North and South America |
| Lagochilascaris minor | Ascaridida | mouth, respiratory tract | North and South America |
| Mammomonogamus auris | Strongylida | nasal, trachea | Asia |
| Mammomonogamus ierei | Strongylida | nasal, trachea | Trinidad |
| Mammomonogamus mcgaughei | Strongylida | nasal, trachea | Sri Lanka |
| Mammomonogamus dispar | Strongylida | nasal, trachea | South America |
| Mastophorus muris | Spiruroidea | stomach | Europe, North America |
| Molineus barbatus | Trichostrongyloidea | small intestine | North America |
| Ollulanus tricuspis | Trichostrongyloidea | stomach | Australia, southern Europe, the Americas |
| Oslerus rostratus | Metastrongylid | lungs | United States, Pacific Islands, southern Europe, Middle East |
| Pearsonema spp | Enoplida | urinary bladder, renal pelvis | Worldwide |
| Physaloptera brevispiculum | Physalopteroidea | small intestine, connective tissue | Sri Lanka |
| Physaloptera pacitae | Physalopteroidea | small intestine, connective tissue | Philippines |
| Physaloptera praeputialis | Physalopteroidea | small intestine, connective tissue | Worldwide |
| Physaloptera pseudopraeputialis | Physalopteroidea | small intestine, connective tissue | Philippines |
| Physaloptera rara | Physalopteroidea | small intestine, connective tissue | North America |
| Pterygodermatites cahirensis | Rictularioidea | small intestine | Southern Europe, North Africa, India |
| Pterygodermatites affinis | Rictularioidea | small intestine | Southern Europe, North Africa, India |
| Rhabditis strongyloides | Rhabditida | urinary bladder | Europe, North America |
| Spirocerca lupi | Spiruroidea | oesophagus, stomach, small intestine | Asia, the Americas |
| Spirura rytipleurites | Spiruroidea | oesophagus, stomach | Southern Europe, North Africa |
| Strongyloides stercoralis | Rhabditida | small intestine, lungs | South-East Asia |
| Strongyloides felis | Rhabditida | small intestine, lungs | Australia, India |
| Strongyloides planiceps | Rhabditida | small intestine | South-Eat Asian, Japan |
| Strongyloides tumefaciens | Rhabditida | small intestine | North America |
| Thelazia californiensis | Thelazioidea | connective tissue, eye | North America |
| Thelazia callipaeda | Thelazioidea | connective tissue, eye | Asia, India, southern Europe |
| Toxocara canis | Ascaridida | small intestine, lungs | Worldwide |
| Toxocara cati | Ascaridida | small intestine, lungs | Worldwide |
| Toxascaris leonina | Ascaridida | small intestine | Worldwide |
| Trichuris spp | Trichurioidea | small intestine | Australia, North and South America |
| Trichinella spiralis | Enoplida | skeletal muscle | Worldwide |
| Troglostrongylus subcrenatus | Metastrongyloid | lungs | Africa |
| Turgida turgida | Physalopteridae | stomach | North and South America |
| Uncinaria stenocephala | Ancylostomatidae | small intestine | North Africa, Europe, Asia |
| Vogeloides massinoi | Thelazioidea | lungs | North America, Europe |
| Vogeloides ramanujacharii | Thelazioidea | lungs | North America, Europe |
References
- ↑ Wolffhugel, K (1933) Paraplegia cruralis parasitaria felis, causada por Gurltia paralysans nov. gen. n. sp. (nematodes). Rev Chilena Hist Nat 37:190-192