Opossums

opossums

Overview

Opossums are North America’s only native marsupials and are commonly found throughout Florida. While they play a beneficial role in the ecosystem by eating insects, carrion, and even ticks, opossums often become a nuisance when they take shelter under homes, porches, or inside attics. Their presence can lead to unwanted mess, odors, and structural issues.

Identification

The Virginia opossum is the only species found in Florida. It has a pointed snout, grayish fur, naked tail, and prominent ears. Adults typically weigh between 4 and 14 pounds. Opossums are known for their distinctive behavior of “playing dead” when threatened — a passive defense mechanism.

They are nocturnal and often seen at night rummaging through garbage or crossing roads. Young opossums may be spotted riding on their mother’s back.

Typical Habitats

  • Crawl spaces and under mobile homes
  • Attics, especially in warmer months
  • Hollow trees or dense brush piles
  • Sheds and garages with unsecured entry points
  • Under decks and porches

Behavior and Seasonal Patterns

Opossums are solitary and mostly active at night. They are scavengers by nature and drawn to easily accessible food sources such as pet food, compost, and trash bins. While they don’t typically build nests, they will take advantage of existing shelter and line it with leaves or insulation.

Breeding can occur nearly year-round in Florida’s warm climate, with peak activity in spring and summer. Females can carry up to 13 young in their pouch and later on their back.

Damage and Health Risks

  • Foul odors and waste buildup from denning sites
  • Torn ductwork or insulation in crawl spaces and attics
  • Disease risk, including leptospirosis, salmonella, and parasites like fleas or ticks
  • Potential for fights with pets, especially dogs

Legal and Ethical Considerations

Opossums are considered nuisance wildlife in Florida and may be removed if they are

  • Secure crawl space openings with wildlife-proof screening
  • Remove food sources such as pet dishes, unsecured garbage, and fallen fruit
  • Keep low vegetation and woodpiles trimmed and away from buildings
  • Use one-way exclusion devices only after confirming the space is clear of young

causing property damage. However, because they are not typically aggressive and provide ecological benefits, humane exclusion is encouraged over lethal removal.

Prevention and Exclusion

  • Secure crawl space openings with wildlife-proof screening
  • Remove food sources such as pet dishes, unsecured garbage, and fallen fruit
  • Keep low vegetation and woodpiles trimmed and away from buildings
  • Use one-way exclusion devices only after confirming the space is clear of young

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