All parasites (cats)
Aelurostrongylus abstrusus
Aelurostrongylus abstrusus occurs in cats in many parts of the world, especially where it is warm and damp. The parasite is seen occasionally as a clinical problem in British Colum...
Alaria species
Alaria species are intestinal trematodes of domestic dogs and occasionally cats, and of free-ranging canids and felids.
Ancylostoma tubaeforme
The nematode Ancylostoma tubaeforme is a hookworm of cats that occurs around the world. Infection with A. tubaeforme is rarely diagnosed in cats in Canada.
Capillaria plica
The nematode Capillaria plica occurs in the urinary bladder of dogs, free-ranging carnivores, and rarely cats, worldwide, likely including Canada.
Cheyletiella species
Dogs and cats each have their own species of the mite Cheyletiella, which appear to be host-specific — C. yasguri in dogs and C. blakei in cats.
Cryptosporidium species
Cryptosporidium spp. are gastrointestinal coccidians (although the taxonomy is controversial) of a wide range of vertebrates (mammals, birds, amphibians, reptiles, and fish). Surve...
Cuterebra species — rabbit bot
Adults of the dipteran (fly) genus Cuterebra are free-living. Larvae are found under the skin of various hosts, generally rodents but occasionally dogs and cats.
Cystoisospora species
Dogs and cats around the world, especially pups and kittens, are often infected with a range of species of Cystoisospora (formerly known as Isospora).
Demodex species — cats
Cats can be infested with three species of Demodex: D. cati, D. gatoi, and a third, as yet un-named species.
Dermacentor variabilis: American dog tick
Dermacentor variabalis is a large reddish-brown to gray-brown tick. In Canada, D. variabilis is found from eastern Saskatchewan and east through to Nova Scotia, primarily in the so...
Dioctophyma renale
Dioctophyma renale occurs in dogs, foxes, mink, ferrets, otters, cats (on occasion), pigs, horses, cattle and people.
Dipylidium caninum
Dipylidium caninum is a tapeworm of the small intestines of domestic dogs and cats and free-ranging canids and felids.
Dirofilaria immitis
The nematode Dirofilaria immitis (heartworm) occurs in domestic dogs and less often in cats, and in free-ranging canids and other carnivores, in many regions of the world.
Echinococcus multilocularis
The cestode genus Echinococcus contains at least seven established species, two of which occur in Canada: Echinococcus canadensis and E. multilocularis.
Eucoleus (Capillaria) aerophila
Eucoleus aerophila is a tracheal worm that infects primarily foxes and occasionally other free-ranging carnivores, dogs, cats and people.
Eutrombicula species
Trombiculid mites are free-living but their larval stages can infest a range of mammals, birds and people, causing sometimes severe skin lesions characterised by intense pruritus.
Ixodes species
Ixodes spp. ticks are a genus of hard ticks found worldwide. In North America, the primary species of veterinary and public health importance are I. scapularis (in southern Manito...
Lice Dogs and Cats: chewing (Mallophaga), and sucking (Anoplura)
Lice occur on dogs and cats around the world. In Canada dogs are hosts to both sucking and chewing lice (Linognathus setosus and Trichodectes canis, respectively), and cats only t...
Myiasis
Myiasis is the infestation of living vertebrates with the larvae of flies, the species of which vary with location around the world.
Notoedres cati
Mites of the burrowing mite genus Notoedres infest domestic cats and free-ranging felids, and rarely domestic dogs and free-ranging canids, around the world.
Ollulanus tricuspis
The trichostrongyle nematode Ollulanus tricuspis infects predominantly cats and wild felids, and occasionally pigs, foxes and dogs, in Europe, North and South America, Australia an...
Otodectes cynotis
The ear mite Otodectes cynotis infects dogs and cats and several free-ranging carnivores around the world.
Physaloptera species
Physaloptera spp. are spiruroid stomach nematodes that occur primarily in cats, wild felids and occasionally dogs in North America, including Canada, as well as in South America, C...
Sarcocystis species
Species of the intracellular, apicomplexan protozoan Sarcocystis occur in mammals, reptiles and birds around the world, including in Canada.
Sarcocystis species-pigs
Species of the intracellular, apicomplexan protozoan Sarcocystis occur in mammals, reptiles and birds around the world, including in Canada.
Taenia species
The cestode genus Taenia includes several species that as adults live in the small intestine of dogs and/or cats and free-ranging carnivores around the world.
Tick-borne pathogens
Relative to the United States and many other countries, the burden of tick-borne pathogens that can infect pets and people is thought to be relatively low in Canada.
Toxascaris leonina
Toxascaris leonina is an ascarid nematode of the small intestine of domestic dogs and cats and free-ranging canids and felids.
Toxocara cati
Toxacara cati is an ascarid nematodes of the small intestine of cats and free-ranging felids. It occurs around the world, including Canada.
Toxoplasma gondii
Toxoplasma gondii is a zoonotic intracellular apicomplexan protozoan parasite of mammals and birds that occurs around the world, including in Canada.
Toxoplasma gondii
Toxoplasma gondii is a zoonotic intracellular apicomplexan protozoan parasite of mammals and birds that occurs around the world, including in Canada.
Trictrichomonas foetus
Recognition of the Trictrichomonas foetus as an important enteric parasite of cats first occurred in the mid-1990s. Since then reports from several regions of the world have estab...