Rare wolf attack on baby foxes found on Isle Royale

For the first time, scientists have documented an adult wolf killing red fox kits in their den. The event occurred in Isle Royale National Park, where researchers found evidence that an adult male wolf known as 016M attacked the kits, killing and possibly feeding on at least two of them – and possibly also killing a third littermate.

Rising water makes Lake Michigan wetlands vulnerable to invaders

European frogbit, an invasive species, has been documented in Wisconsin, where it could threaten native plants, fish and invertebrates. The small, green, heart-shaped lily pad, forms dense mats along the surface of the water, blocking out sunlight that submergent plants need to survive.

Commentary: Bullfrogs are my favorite band

Bullfrogs are hard to spot, even though they’re loud and large. Using environmental DNA can be helpful in locating and understanding elusive creatures like bullfrogs.