Mountain lions living in Central and Southern California have faced significant challenges over the last several decades. According to the California Fish and Game Commission, the biggest threat the ...

WASHINGTON (Reuters) - The most extensive genetic analysis of mountain gorillas ever conducted has found the critically endangered apes burdened with severe inbreeding and at risk of extinction but ...

People have taken many steps in recent decades to help the Pacific Northwest's endangered killer whales, which have long suffered from starvation, pollution and the legacy of having many of their ...

Los Angeles is the only major metropolitan area in the world with a bevy of mountain lions, hunting and breeding in the hills above gleaming houses and suburbs. Some of these intrepid cats have become ...

The small size and isolation of the endangered population of Southern Resident killer whales in the Pacific Northwest have led to high levels of inbreeding. This inbreeding has contributed to their ...