A flare up of a disease that’s especially lethal to wolf pups took a toll on Wyoming and Yellowstone National Park wolf numbers in 2025, reducing biologists’ counts to a level last seen when wolves ...

Learn more about the canine distemper outbreak that could have reduced Yellowstone wolf pup populations to a historic low.

Few animals symbolize wild interconnectedness quite like wolves, whose return helped reveal just how tightly ecosystems are ...

Over the last three decades, Yellowstone National Park has undergone an ecological cascade. As elk numbers fell, aspen and willow trees thrived. This, in turn, allowed beaver numbers to increase, ...

In Yellowstone National Park — where gray wolves were reintroduced starting in 1995 — researchers have gone back and forth on whether the restoration of wolves has impacted the ecosystem. The idea is ...

This story is free to read because readers choose to support LAist. If you find value in independent local reporting, make a donation to power our newsroom today. This winter saw the most wolves from ...

Despite distemper-driven decline, most remaining canines now have strong antibodies and resistance — and state biologists are ...