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Coccidiosis is an intestinal tract infection caused by a one-celled organism or protozoa called coccidia. In cats and dogs, most coccidia are of the genus called Isospora. Isospora felis and Isospora rivolta are the most common species of coccidia found in cats.
Learn MoreThe ear mite Otodectes cynotis is a surface mite that lives on cats, dogs, rabbits and ferrets. It is usually found in the ear canal but it can also live on the skin surface. The entire ear mite life cycle takes place on animals.
Learn MoreCuterebra is the genus or scientific family name of the North American rabbit or rodent botfly. Twenty-six species of Cuterebra are known to occur in the United States and Canada. Cuterebra larvae develop within the tissues of certain animal hosts, and during this phase of their life cycle, they are commonly referred to as warbles.
Learn MoreOne of the most common medical conditions affecting cats is allergy. An allergy occurs when the cat's immune system "overreacts" to foreign substances called allergens or antigens. Allergens and antigens are simply foreign proteins that the body's immune system tries to remove.
Learn MoreThe most common flea found on cats and dogs is the cat flea (Ctenocephalides felis), although any species of fleas, including fleas from rabbits, squirrels or other wildlife, can be found on cats.
Learn MoreHarvest mites, also known as red bugs, trombiculid mites, scrub-itch mites, berry bugs or, in their larval stage as chiggers, are mites that are commonly found in forests and grasslands. Harvest mites are relatives of spiders.
Learn MoreHeartworms are a blood-borne parasite called Dirofilaria immitis that reside in the heart or adjacent large blood vessels of infected animals. The female worm is 6 to 14 inches long (15 to 36 cm) and 1/8 inch wide (5 mm). The male is about half the size of the female. Heartworm disease is much more common in dogs.
Learn MoreHookworms are intestinal parasites of the cat and dog. Their name is derived from the hook-like mouthparts they use to anchor themselves to the lining of the intestinal wall. They are only about 1/8" (two to three mm) long and so small in diameter that they are barely visible to the naked eye.
Learn MoreRoundworms are one of the most common intestinal parasites of the cat. They can be an important cause of illness, even death, in kittens. As their name implies, these are large-bodied round worms, averaging about 3-6 inches (8-15 cm) in length. They do not attach to the wall of the intestine, as some intestinal parasites do. Instead, they are literally "swimming" freely within the intestine.
Learn MoreTapeworms are intestinal parasites of the cat and dog. They are classified as cestodes. They belong to a different family than hookworms and roundworms, which are the other common intestinal parasites of dogs and cats. Several types of tapeworms are known to infect cats. Dipylidium caninum is by far the most common species observed in cats.
Learn MoreAlthough ticks are commonly thought of as insects, they are actually arachnids similar to scorpions, spiders and mites. All ticks have four pairs of legs for a total of eight legs as adults and have no antennae. Adult insects by comparison have three pairs of legs (6six total legs) and one pair of antennae.
Learn MoreToxoplasmosis is a disease caused by infection with the organism called Toxoplasma gondii (T. gondii). This is a microscopic single-cell protozoal organism related to coccidia. Virtually all warm-blooded animals, including people, can be infected with this organism. It is an extremely well adapted parasite and rarely causes significant disease to the individuals it infects.
Learn MoreFlea allergy dermatitis (FAD) is the leading cause of allergic conditions and itching in dogs.
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Most people know someone who is allergic to certain foods, such as strawberries or nuts. Food allergy is one of the five most common allergies or hypersensitivities known to affect dogs. In a pet with an allergy, the immune system overreacts and produces antibodies to substances that it would normally tolerate.
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Cheyletiellosis is an uncommon but highly contagious skin parasite of dogs, cats and rabbits caused by Cheyletiella spp. mites. It is also referred to as "walking dandruff" due to the appearance of the large, whitish mites as they crawl across skin and fur, and the excessive scaling that accompanies the infection.
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Coccidiosis is an intestinal tract infection caused by one-celled organisms (protozoa) called coccidia. Coccidia are sub-classified into a number of genera, and each genus has a number of species. At least four different genera of coccidia can infect dogs. These microscopic parasites spend part of their life cycle in the lining cells of the intestine.
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Although ticks are commonly thought of as insects, they are actually arachnids similar to scorpions, spiders and mites. All ticks have four pairs of legs (eight legs in total) as adults and have no antennae.
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Mange is a parasitic skin disease caused by microscopic mites. Two different mange mites cause skin disease in dogs. One lives just under the surface of the skin, while the other resides deep in the hair follicles. Although both mites share similar characteristics, there are also important differences.
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NOTE: If you perform the demodectic mange dipping yourself, be sure to wear rubber gloves and eye protection to prevent contact with your skin. Serious side-effects may result from improper usage. Be sure to follow any label instructions carefully.
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Successful flea control involves both eliminating fleas from your dog and controlling fleas in your environment. Dogs and cats share the same fleas, and fleas can travel from one animal to another. Thus, it is important that all pets in your home are on a flea preventive program.
Learn MoreGiardiasis is an intestinal infection in humans and animals caused by a protozoan parasite Giardia intestinalis . Giardia is a simple one-celled parasitic species; it is not a "worm", bacteria or virus. The parasite occurs worldwide and is a common cause of "Traveler's Diarrhea" in people.
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Heartworm disease or dirofilariasis is a serious and potentially fatal disease. It is caused by a blood-borne parasite known as Dirofilaria immitis.
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Hookworms (Ancylostoma caninum, Ancylostoma braziliense) are intestinal parasites of the cat and dog that get their name from the hook-like mouthparts they use to anchor themselves to the lining of the intestinal wall. They are only about 1/8" (3 mm) long and so small that it is very difficult to see them with the naked eye.
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This handout is designed to give you an overview of some of the internal parasites that can infect your dog. There are also separate information sheets on roundworms, hookworms, whipworms, tapeworms and heartworms that will provide you with more details.
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Leishmaniasis is a disease caused by a protozoan parasite found in dogs and certain rodents in many parts of the world, most commonly in rural areas. The parasite is transmitted by a small biting sand fly (Phlebotomus spp.). It is an important disease because humans can also contract Leishmaniasis.
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Sarcoptic mange is caused by a parasitic mite that burrows just beneath the surface of the skin, Sarcoptes scabiei. The mite feeds on material in and on the skin. It is also known as scabies and is a zoonotic disease or a disease transmissible from pets to people.
Learn MoreWhile many owners believe parasites are common causes of skin disorders and feather loss in birds, this is usually not the case. However, Knemidokoptic mange, also called “cere mites” or “scaly face” is a relatively common disorder, particularly in some of the smaller species of birds.
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Whipworms are intestinal parasites that are about 1/4 inch (6 mm) long. They live in the cecum and colon (large intestine) of dogs where they cause severe irritation to the lining of those organs.
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Roundworms (nematodes or ascarids) are parasites that live freely in the intestine, feeding off of partially digested intestinal contents.
Learn MoreUnlike dogs and cats, parasites are not commonly diagnosed in pet birds. When present, however, they can cause generalized debilitation for the birds. Some parasites cause specific clinical conditions.
Learn MoreTapeworms are flat intestinal worms that are made up of many small segments, each about " (3-5 mm) long. Unlike roundworms that live freely in the intestinal tract, tapeworms attach to the wall of the small intestine using hook-like mouthparts.
Learn MoreCommon conditions of pet prairie dogs include obesity, dental disease, respiratory disease, heart disease, and parasites. Prairie dogs can also be afflicted with cancer and ringworm.
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Cuterebra is the genus or scientific family name of the North American botfly. Twenty-six species of Cuterebra are known to occur in the U.S. and Canada. Botflies are also found in Mexico and the neotropical region. Cuterebra larvae develop within the tissues of certain animal hosts, and during this phase of their life cycle, they are commonly referred to as 'warbles'.
Learn MoreCommon conditions of pet rabbits include snuffles, internal and external parasites, overgrown incisors, uterine problems (infections or cancer), and sore hocks.
Learn MoreDuring the summer months, pet rabbits allowed to run outdoors might be affected by a fly maggot infestation. Different terms are used for this but fly strike is a common one. Another is to say that the rabbit is fly blown.
Learn MoreCommon conditions of pet snakes include infectious stomatitis (mouth rot), parasites, blister disease, inclusion body disease, respiratory disease, and septicemia.
Learn MoreThe Bearded Dragon is a well-known lizard and currently considered one of the best pet lizards. There are eight species of Bearded Dragons, but the most popular one is the Inland or Central Bearded Dragon (Pogona vitticeps), from the arid to semi-arid southeastern parts of Australia, and we will be discussing the Inland Bearded Dragon in this handout.
Learn MoreGuinea pigs are easy to care for and, if handled frequently and gently, make great family pets. They are generally hardy, healthy animals but are susceptible to certain problems and diseases.
Learn MoreCommon conditions of pet turtles include Vitamin A deficiency, respiratory diseases, abscesses, shell infections and fractures, and parasites.
Learn MoreSweet Itch is a skin disease (sometimes called summer itch or seasonal allergic dermatitis) and is caused by an allergy to the saliva of certain biting flies or midges (e.g., Culicoides spp.).
Learn MoreParasitic worms live in the intestines of horses and ponies. Small numbers of worms can be tolerated, causing no effect on well-being.
Learn MoreHistoplasmosis is a chronic, non-contagious fungal infection caused by the soil-dwelling fungus Histoplasma capsulatum. Histoplasma capsulatum is found globally and may infect both humans and animals. However, histoplasmosis is uncommon to rare in all but dogs and cats.
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Histoplasmosis is a chronic, non-contagious fungal infection caused by the soil-dwelling fungus Histoplasma capsulatum. Histoplasma capsulatum is found globally and may infect both humans and animals. However, histoplasmosis is uncommon to rare in all but dogs and cats.
Learn MoreFeline upper respiratory infection (URI) is one term for a respiratory infection caused by one or more viral or bacterial agents. Synonyms for this condition include feline infectious respiratory disease and feline upper respiratory disease complex (URD).
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Anaplasmosis is a tickborne disease caused by the infectious bacterial organism Anaplasma phagocytophilum. It is transmitted through bites of the deer tick (also known as the black-legged tick) and western black-legged tick.
Learn MoreRabbits can acquire external parasites. Fleas are a small insect parasite that may take up residence on your rabbit, especially if exposed to fleas outdoors or in a house with dogs or cats who themselves have fleas.
Learn MoreFerrets can acquire external parasites. Flea infestation is a common problem in pet ferrets. Fleas are a small insect parasite that may take up residence on your ferret, especially if exposed to fleas outdoors or in a house with dogs, cats or other animals who themselves have fleas.
Learn MoreHedgehogs can acquire external parasites. Flea infestation is not a common problem in pet hedgehogs. Fleas are a small insect parasite that may take up residence on your hedgehog, especially if exposed to fleas outdoors or in a house with dogs, cats or other animals who themselves have fleas.
Learn MoreFerrets commonly get infestations of an ear mite called Otodectes cynotis. Many ferrets show no symptoms of infestation. Subsequent problems of the ears are rare. Ear mites are acquired from other affected animals at the breeders, in pet stores or animal shelters.
Learn MoreEncephalitozoonsis is an infection that can affect the kidneys, eyes and nervous system of rabbits. It’s caused by an organism called Encephalitozoon cuniculi or E. cuniculi, a small microsporidian parasite that’s intracellular (it has to live within another cell).
Learn MoreWalking Dandruff (cheyletiellosis) in rabbits is caused by a common rabbit fur mite (Cheyletiella parasitovorax). The mite’s effects are called "walking dandruff" because these large, whitish mites crawl across the skin and fur, and cause excessive flaky skin on a rabbit.
Learn MoreMites are small insect parasites that can cause serious skin problems for your guinea pig. The two common guinea pig fur mites are Trixacarus caviae (sarcoptic mange mite) and Chirodiscoides caviae.
Learn MoreThe common rabbit pinworm (an Oxyurid called Passalurus ambiguus) is an internal (intestinal) parasite found in rabbits. It does not cause a serious health threat to rabbits, but it can cause uncomfortable itching and skin inflammation or redness.
Learn MoreEimeria spp and other coccidial organisms can infect rabbits with a disease called coccidia, especially young and recently weaned rabbits. These organisms live in rabbit intestines and also can infecting the liver. They’re species or host specific, meaning they only live in rabbits.
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Lung flukes are parasitic organisms called trematodes. The most common lung fluke to affect dogs in North America is called Paragonimus kellicotti, also known as the North American lung fluke.
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Rocky Mountain Spotted Fever is a disease caused by an infectious organism with the scientific name of Rickettsia rickettsii. Rocky Mountain Spotted Fever occurs in North, South, and Central America.
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A lungworm infection is caused by one of several parasitic roundworms. Dogs pick up a lungworm infection by swallowing infective stages of the parasitic lungworm. The exact means of picking up the infection varies according to the life cycle of the particular parasite.
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Pythiosis is the result of being infected by a water mold called Pythium insidiosum. This organism can affect the gastrointestinal tract or the skin.
Learn MoreLung flukes are parasitic organisms called trematodes. The most common lung fluke to affect cats in North America is called Paragonimus kellicotti, also known as the North American lung fluke. Other species of lung flukes can infect cats in other areas of the world, but are rarely found in North America.
Learn MoreCytauxzoonosis is a tick-borne parasitic disease caused by Cytauxzoon felis, a protozoal organism. Cytauxzoon felis infects the blood cells of cats. It was first reported in the USA in 1976, and is now an important emerging disease in domestic cats.
Learn MoreDemodecosis is a parasitic skin condition, caused by demodex mites. These microscopic mites can be found on the skin of all animals, but in some cases they proliferate to excessive levels and cause clinical signs.
Learn MoreDespite sounding like a toxicity, salmon poisoning is actually an infection. Salmon poisoning is caused by a type of bacteria found within parasitic flatworms that infect the tissues of wild fish found in coastal streams of the Pacific Northwest.
Learn MoreHeartworms are a blood-borne parasite called Dirofilaria immitis that reside in the heart or adjacent large blood vessels of infected animals. There is no drug approved for treating heartworms in cats. Veterinarians now strongly recommend that all cats receive year-round monthly heartworm preventative in areas where mosquitoes are active all year round.
Learn MoreHeartworm disease or dirofilariasis is a serious and potentially fatal disease. It is caused by a blood-borne parasite known as Dirofilaria immitis. Treatment usually consists of several parts including an injectable drug to kill adult heartworms, antibiotics, and treatment to kill microfilaria. There is some risk involved in treating dogs with heartworms, although fatalities are rare.
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