Common Intestinal Parasites
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Common Intestinal Parasites
Please pay close attention to the shape and size of both the eggs and adults as you will be tested on this information
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Hookworms
Scientific Name: Ancylostoma caninum Common parasites of both dogs and cats Notice the bundle of “eggs” within the egg Notice the thin outer shell
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Hookworms
Scientific Name: Uncinaria stenocephala Uncinaria is the larger egg in the picture
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Hookworms
Adult hookworm Notice the “hook” on the mouthparts Causes bloody diarrhea
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Tapeworm
Scientific name: Dipylidium caninum Most common tapeworm of dogs and cats Large egg with what looks like “packets” of eggs inside
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Tapeworm
Scientific Name: Taenia sp. Commonly found in both dogs and cats Not usually seen on a fecal flotation
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Tapeworms
Adult tapeworm Notice the “segmented” appearance
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Roundworms
Scientific Name: Toxacara canis and Toxacaris leonina T. canis is commonly found in both dogs and cats T. canis is larger than T. leonina T. leonina is less common in dogs and cats Notice the thick outer shell and dark interior
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Roundworm
Adult roundworm Clients typically describe the adult worm as looking like
spaghetti Common in puppies
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Whipworms
Scientific Name: Trichuris vulpis Common worm in dogs Notice the “plug” or operculum at both ends of the egg
and thick brown shell
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Whipworm
Adult dog whipworm Notice the “whip” type appearance of the tail The tail slashes the lining of the intestines, causing
bloody diarrhea
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Coccidia
Scientific Name: Isospora canis Common canine parasite Notice the oval shape
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Coccidia
Scientific Name: Isospora felis Common feline parasite