Show Some Loving for Opossums

A Blog Story About Nature in Our DuPage Forest Preserves

Show Some Loving for Opossums

Posted by Jennifer Rydzewski | 7/15/20 3:13 PM

The Virginia opossum (Didelphis virginiana) probably won’t win any popularity contests based on its looks.

With its beady eyes, a scaly hairless tail, and sharp-toothed grin, it roams forest floors, neighborhoods and your backyard at night in search of food.

But let’s take another look at these misunderstood marsupials. They actually have some really amazing features, including ridding your yard of pests. So show some love for opossums by celebrating their unique role as nature’s clean-up crew.

 

Marvelous Marsupials

The Virginia opossum is the only marsupial native to North America. Well-known marsupials of Australia include kangaroos, wallabies, and koalas.

Marsupials are the only animals that carry their young in a pouch. Their young are born after only 12 to 14 days. Resembling pink jelly beans, the babies crawl into the mother’s pouch where they can safely continue growing for 55-60 days.

When the young get big enough to leave the pouch, they climb on their mom’s back and are carried around for another 4 to 6 weeks. If separated, baby opossums will make a sneezing noise to signal their mother, who makes a clicking sound to help the baby find her. If threatened, the baby will open its mouth and quietly hiss until the threat is gone.

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Nature’s Clean Up Crew

Opossums are nocturnal omnivores. Their big dark eyes and long whiskers help them see in the dark. They eat just about anything, including carrion (dead animals), rats and mice, overripe fruit on the ground, grubs, insects and ticks — lots of ticks, which carry illnesses like Lyme disease.

The humble Virginia opossum kills nearly 95% of the ticks that cross its path. One adult opossum can eat thousands of ticks in one season. Their nomadic tendencies ability to cover a lot of ground, and clean up a lot of pests every night.

Opossums frequently eat pests like cockroaches, rats, and mice that can be carriers of infectious diseases. And they eat snails and slugs that can wreak havoc on your garden.

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Expert Climbers

Opossums’ hind feet have an opposable digit with no claw to grasp branches while climbing, similar to how a human thumb can wrap around an object for a better grip. A prehensile tail acts as a fifth limb to curl around branches and other objects while climbing and helps with balance. Opossums even use their tail to carry bunches of leaves or other nesting materials back to their nest. Baby opossums will sometimes even hang from their tails.

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Unusual Defenses

If an opossum feels threatened, its defenses are limited. It will “play possum,” an involuntary response where its body goes limp, it foams at the mouth and emits a foul-smelling odor to appear sick or dead, making it a less appetizing to a predator.

It may also open its mouth wide and hiss, which may look intimidating with its 50 teeth — the most of any North American land mammal. But they are generally not aggressive and are more afraid of humans than humans may be of them. It’s best to avoid cornering an opossum or any wild animal by giving them enough space to move away.


Appearance

Opossums get a bad wrap because of their looks, but they’re somewhat vulnerable. Their scaled tail and delicate ears can actually get frostbite in the winter, which can cause permanent skin damage. As opossums age, they get more grizzled in appearance, yet those looks are well-earned because of all the amazing things opossums do.

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Topics: Insider, Wildlife, Nature

Written by Jennifer Rydzewski

Jennifer Rydzewski is a naturalist at Fullersburg Woods Nature Education Center. She has a B.S. in animal sciences and an M.S. in natural resources and environmental sciences from the University of Illinois at Urbana-Champaign, and an M.A. in zoology focusing on community-based conservation and experiential learning from Miami University. Her 10+ years of professional experience in environmental education include outdoor, classroom, community, zoo and residential camp settings. Her favorite things about being a naturalist are learning something new every single day and sharing excitement about nature with others.