Our native Opossum, North America's only native marsupial, is our greatest ally in the fight against lyme and other tick borne diseases, consuming up to 5000 ticks annually............"In 1608, Capt. John Smith coined the word opossum from the word opassum, the Algonquian term meaning white animal.".............."In his notes, the captain wrote: An Opassom hath an head like a Swine, and a taile like a Rat, and is of the bignes of a Cat. Under her belly she hath a bagge, wherein shee lodgeth, carrieth, and sucketh her young"................... "No one is quite sure how the opossum’s “o” was dropped, but it appeared in print as "possum" as early as 1613, and remains the colloquial term in many regions of the country".................. "Opossums are mostly immune to rabies, and in fact, they are eight times less likely to carry rabies compared to wild dogs".............. "Opossums have partial or total immunity to the venom produced by rattlesnakes, cottonmouths and other pit vipers"................."Their normal diet consists of carrion, rodents, insects, ticks, snails, slugs, birds, eggs, frogs, plants, fruits and grains"................. "They also eat human food, table scraps, dog and cat food"................."They have an unusually high need for calcium, which incites them to eat the skeletons of rodents and road kill they consume"..................."They're the sanitation workers of the wild"................ "Although many people think opossums are not the sharpest knives in the drawer, there are several areas of intelligence in which they soar"................ "When tested for the ability to remember where food is, opossums scored better than rats, rabbits, cats and dogs"................. "They also can find their way through a maze more quickly than rats and cats"................. "Since their diet allows them to indulge on snails, slugs and beetles, they are a welcome addition to the garden"................"Opossums also keep rats and cockroaches at bay by competing with them for food".................."In fact, it’s common for opossums to kill cockroaches and rats if they find them in their territory"............."The opossum has opposable "thumbs(called halux) which are on its rear feet (so, technically they're toes), and abet the opossum’s formidable climbing skills".............."They have prehensile tails which are adapted for grasping and wrapping around things like tree limbs"...................."The opossum can hang from its tail for short periods of time, but the creature doesn’t sleep hanging from its tail, as some people think"............................ "Opossums have been observed carrying bundles of grasses and other materials by looping their tail around them; this conscious control leads many to consider the tail as a fifth appendage, like a hand"............. "The mouth of an opossum holds an impressive 50 teeth".................."When threatened, opossums run, growl, belch, urinate and defecate"..............."When all else fails, they “play ‘possum" and act as if they are dead"..................."It is an involuntary response (like fainting) rather than a conscious act"..................."They roll over, become stiff, close their eyes (or stare off into space) and bare their teeth as saliva foams around the mouth and a foul-smelling fluid is secreted from glands"..............."The catatonic state can last for up to four hours, and has proven effective as a deterrent to predators looking for a hot meal".

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Some say they’re pests, but opossums can be helpful

Alan Sarnacki 12/17/18

When the motion sensor light on the porch switched on at 11 p.m., Susan Dolloff figured it was the stray cat that roams her neighborhood in western Maine. Her family puts food out for the feral feline. They love animals, both wild and domestic. But that night, it wasn’t the cat.Its long snout was buried in a bowl of meat scraps. An opossum was their unexpected visitor.

A young female opossum growls at Pam Richardson, assistant gamekeeper at Maine Wildlife Park in Gray, on Oct. 22, 2012.-

Aislinn Sarnacki | BDN

“Then it kind of nosed around where we had been storing some birdseed,” Dolloff said. “Then he was in the recycle bin.”

Opossums have a varied diet.

The wild critter is fairly new to the state, having expanded its territory north into southern Maine over the past decade. More and more, Mainers are encountering this highly adaptable marsupial.

Range of the Opossum

“Now, it’s like there’s a possum under every bird feeder,” Keel Kemper, state regional wildlife biologist in central Maine, said.

“I’d be surprised if they have opossums in Jackman yet,” Kemper said. “But even where I am in central Maine, they’re really getting common, particularly this fall for some reason. People are just encountering them, and now we’re receiving complaints of [them being a] nuisance.”

‘They aren’t pretty’

With a long, tapering snout and a nearly-bald tail, opossums are often mistaken for giant rats, measuring 2 to 3 feet long. However, the two animals are not even remotely related. Opossums are a primitive mammal, their origins reaching back to 65 to 90 million years ago, and they’re the only marsupial in United States. They carry their babies in external pouches, like a kangaroo.

They also boast 50 teeth — more than any other mammal.

“They aren’t pretty,” Dolloff said. “The first night we probably watched him for 20 minutes or half an hour, just watching through the window.”

Despite the creature’s less than charming appearance, the Dolloffs have decided that they wanted it to stick around. Living in the mountainous forest of western Maine, the couple enjoys watching wildlife, and they usually don’t play favorites. They feed the birds, and they feed the squirrels. They welcome deer to their yard, as well as moose.

“I don’t mind the opossum being around,” Dolloff said. “I’ve read that they’re very good at getting ticks out of your yard, and I’m in favor of that. So as long as it leaves my cat alone, I’m OK.”

Opossums will bare their teeth, growl and hiss when threatened, according to the Maine Department of Inland Fisheries and Wildlife, but they are generally not aggressive animals and seldom cause problems for homeowners. Nevertheless, Kemper has received several calls recently from people who are concerned they might be attacked by these relative newcomers.

“I’ve been somewhat surprised at the alarm some people have when in fact this [animal] represents very little threat to us,” Kemper said. “This thing moves in slow motion. Even a fast-running possum isn’t fast. These people are afraid they are going to attack or lunge at them, but the opossum defense mechanism is to ‘play possum.’”

Another way opossum protect themselves is by climbing. They use their prehensile tails to grasp at things, like tree branches, and they have digits on their hind feet that act like opposable thumbs.

They’re also immune to snake venom.

Struggling through winter

Opossums are adaptable because they’ll eat practically anything and they will create dens nearly anywhere that’s dry, sheltered and safe. This includes woodpiles, hollow stumps, rock crevices and under buildings. But like any creature, the opossum does have vulnerabilities. One is that the creature is not particularly well suited for the Maine winter, for a number of reasons.

A nocturnal animal, the opossum doesn’t hibernate, nor is it in the habit of storing food for the winter. Instead, it forages year-round. Therefore, when food sources are scarce during the winter, they can easily starve.

In addition, the opossum isn’t built for the cold. State biologists and wildlife rehabilitators in Maine have frequently found opossums with frostbite on their naked ears, tails and toes. And because the animal doesn’t put on much fat for the winter, it can have a difficult time maintaining its body temperature.

superintendent for the Maine Wildlife Park, said. “In fact, it’s not uncommon for them to seek shelter in people’s outbuildings, in sheds and people’s garages, to hunker down. We’ve found them on our property, in fact. Cleaning out storage areas, we find them rolled up in a ball under equipment.”

Regardless of their vulnerability to the cold and barren landscape of winter in Maine, some opossums seem to be surviving, Kemper said. And he believes it’s because they’re finding shelter — often manmade shelter.

“I don’t think they’re out in the middle of the Great North Woods,” Kemper said, “but they’re able to find their way under people’s houses, and there are urban habitats where they’re able to eat red hot dogs and live off the warmth of dryer vents.”

Pest or guest?

potted it under their bird feeders — a sign that the animal has found a suitable spot nearby to weather the winter.

“We think it’s staying in the barn,” Dolloff said.

While the Dolloffs don’t mind having a resident opossum, some people do. After all, due to their need to forage for food, opossums will get into vegetable gardens, trash cans, recycling bins, compost piles, stored grain and chicken coops. The best way to rid yourself of an opossum is to block these food sources, according to the DIF&W. Store your garbage, compost and other sources of food in secure containers; fence in gardens; install predator guards on fruit trees; clean up barbeque areas and fallen birdseed; and if you must feed pets outdoors, do so in late morning or at midday, then pick up food well before dark.

Another way to discourage opossum from settling near or in your home is by eliminating access to potential den sites, such as chimneys, attics and spaces under houses, porches and sheds. To do this, inspect the buildings on your property and close any potential entries with mesh hardware cloth, boards or metal flashing. Or, another way to make a den site unattractive is by adding lighting to it or a portable radio. Just be sure not to close up a den site with an animal inside.

Whatever you decide — pest or guest — it looks like the opossum is here to stay.

“They’re a part of our urban wildlife now,” Kemper said. “They’re expanding north, and they’re expanding west, just like a number of other things. Cardinals, turkey vultures — there are lots of examples of range expansion [in Maine].”

The good news is that opossums don’t have a track record of being aggressive to cats and dogs. They’re a clean animal, spending much of its time grooming, like a cat. And while all mammals are capable of carrying rabies, opossums rarely carry the disease. In the U.S., the animals most likely to carry and transmit rabies are raccoons, skunks, bats, foxes and coyotes, according to the U.S. Centers for Disease Control and Prevention.

“Don’t panic,” Kemper said. “It’s all good. Just give them their space.”