Latest Articles

  • Opossum joeys are born at just 13 days gestation and the size of a honeybee. Learn how marsupial reproduction differs from placental mammals and what the pouch actually does.

    How Opossum Joeys Develop: Marsupial Reproduction Explained

    Born at the size of a jellybean after just two weeks in the womb, opossum joeys climb blind into the pouch and spend months finishing development. Marsupial reproduction is unlike anything else in North America.

  • Raccoons, opossums, flying squirrels, owls, and more patrol North American backyards after dark. This guide identifies the most common nocturnal visitors and how to observe them.

    Backyard Nocturnal Wildlife: A Field Guide to Your Nighttime Visitors

    Your backyard transforms after sunset. Opossums, raccoons, screech-owls, and flying squirrels follow invisible routes through the dark. Learn who is out there and how to find them.

  • Opossums have an unusually robust immune system that makes them nearly immune to rabies and resistant to many snake venoms. Learn what makes their biology so extraordinary.

    The Remarkable Opossum Immune System: Rabies, Venom, and Cold Tolerance

    Opossums almost never contract rabies, shrug off pit viper bites, and tolerate body temperatures too low for most pathogens to survive. Their immune system is genuinely exceptional.

  • Opossum 'playing dead' is not a trick but an involuntary tonic immobility response. Learn how thanatosis works, what triggers it, and why predators fall for it every time.

    Playing Dead: The Science of Opossum Thanatosis

    When an opossum collapses, stiffens, and emits a rotten smell, it is not acting. Its nervous system has taken over. Thanatosis is one of the most effective survival adaptations in the animal kingdom.

  • Virginia opossums groom off and destroy thousands of ticks each season, making them one of the most effective natural tick-control agents in North American backyards.

    How Opossums Control Ticks in Your Backyard

    A single opossum can hoover up more than 5,000 ticks in a season without ever trying. Here is the science behind one of nature's best pest-control contracts.