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Opossums
The Virginia opossum (Didelphis virginiana) is North America’s only marsupial. Marsupials are animals that carry their young in an abdominal pouch. Adults measure 2-3 feet long (about the size of a normal house cat) have coarse gray fur, hairless tails, and a pointed face. These characteristics are often why opossums are mistaken for large rodents. They are nocturnal omnivores, adept climbers and are adaptable to many environmental conditions. They thrive in urban and suburban areas and may be found under decks, in crawl spaces, attics, garages, or in dense vegetation.
Vector Significance
- Rabies: Opossums can carry the rabies virus, but it is very rare; the last rabies positive opossum in Alameda County was in 1999.
- Canine distemper: This viral disease affects opossums in addition to other wildlife. Unvaccinated domestic dogs are particularly susceptible.
- Ectoparasites: Opossums can host several different ectoparasites, but especially cat fleas. When opossums gain access to homes, in either attics or crawl spaces, these areas may become infested with fleas, which can harbor different pathogens.
- Damage: Opossums can be garden nuisances, eating berries, fruits, and nuts right off the tree; they may also defecate in gardens or garden beds. Because opossums possess sharp teeth and claws, encounters with pets can cause injury. When opossums gain access to places like attics or crawl spaces, they may rip away insulation for their dens.
Vector Control Services
- Vector control can provide an inspection of properties (homes, businesses, schools, etc.) to determine where or how an opossum may have entered the building
- Confirm the type of wildlife that may be present
- Give recommendations on ways to modify the environment to make it less attractive to opossums
- Give recommendations on how to exclude the opossum without harming it or its offspring
- Assist in removal if possible
Requesting Services
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What can the public do?
- NEVER feed opossums. Do not leave pet food or water outside overnight
- Do not approach or corner the animal. Opossums, if they are cornered, may try to bite or play dead
- Pick up fallen fruits and vegetables as soon as possible
- If you see a dead opossum, please contact Animal Control
Opossums
