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Some ovarian cancers are benign and others malignant. In some cases, removal of the affected ovary will be curative. Spread to other internal organs (metastasis) is possible with some types, particularly the larger tumours.
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Rabies is transmitted by a virus and probably the most horrendous disease affecting warm blooded animals which include dogs and humans. It is almost always fatal.
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Ringworm is a skin disease caused by a fungus. Because the lesions are often circular, it was once thought to be caused by a worm curling up in the tissue. However, the condition has nothing to do with a worm.
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Roundworms, nematodes or ascarid worms are intestinal parasites that live freely in the intestine, obtaining their nutriment from the partially digested intestinal contents.
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The sarcoptic mite is responsible for canine scabies (sarcoptic mange). It lives just under the skin.
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Tapeworms as their name suggests are flattened intestinal worms that are actually made up of many small segments about 3-4 mm long. Unlike roundworms which live freely in the bowel, tapeworms attach to the wall of the small intestine by hook like mouth parts.
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Zoonoses are diseases which are transmitted from animals to man.