Wildlife Habitat
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Raccoon roundworm
The Raccoon roundworm, Baylisascaris procyonis, is an internal parasite of raccoons. The parasite lives in the intestinal tract of raccoons and generally does not harm the raccoon unless the raccoon is otherwise debilitated.
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Rabies
Rabies is a contagious, usually fatal disease of the central nervous system that is caused by a virus. All warm-blooded animals, including humans, are susceptible to rabies. Birds and reptiles are not susceptible to naturally-acquired rabies and do…
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Rabbit hemorrhagic disease
For information on Rabbit, hemorrhage disease visits the Emerging Wildlife Diseases page.
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Newcastle disease
Newcastle disease is a highly contagious disease of birds that is caused by a virus. There are many strains of the Newcastle disease virus (NDV) which are classified by the severity of the disease each causes in domestic poultry. In North American…
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Mange
Mange is a skin disease that is caused by a microscopic mite. Several species of mange mites generally affect different species of animals. The most common type of mange in wildlife is sarcoptic mange, caused by the Sarcoptes scabiei mite. In…
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Lead toxicity
Lead is a highly toxic heavy metal that is found in many types of ammunition and fishing tackle. Lead toxicity in wild birds occurs when they accidentally consume a source of lead through their normal feeding habits. Ingestion of lead from spent…
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Epizootic hemorrhagic disease (EHD) in WI deer
In the fall of 2021, epizootic hemorrhagic disease virus (EHDV) was confirmed in deer in La Crosse and Juneau counties. Reports of deer suspected to have died from EHD were less than 20 for each county. Deer were also tested in seven other counties…
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Deer nasal bot flies
Nasal bots are the larvae of the bot fly (Cephenemyia sp.) and are common parasites that are found in the nasal passages of deer. TRANSMISSION Adult female flies deposit eggs in the nostrils of the deer. The eggs hatch into larvae and then pass…
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Deer liver flukes
Liver flukes (Fascioloides magna) are flatworm parasites that may be found in the liver of some deer. Adult flukes are purple-gray in color, flat and oval-shaped. The flukes vary in size from 1.5-3 cm wide to 3-10 cm long. They may look like leeches…
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Deer fibroma
Fibromas are firm, nodular, fleshy masses attached to the skin. They are commonly described as warts. Fibromas vary in size from less than one inch to more than four inches in diameter, and they can be found anywhere on the deer's body, but are most…