A tiny, scaleless, freshwater fish, the highly endangered unarmored threespine stickleback is a fierce protector of its nest, which it defends by dashing forward with gaping mouth and “hackles” raised ...

Offshore oil and gas exploration uses deafening seismic surveys that generate the loudest human sounds in the ocean, short of those made by explosives. Seismic testing involves blasting the seafloor ...

A slumbering Arctic fox in winter will wrap its long, bushy tail around its body for added warmth. Its feet are covered in dense fur to insulate against the cold and provide traction on the ice.

DESCRIPTION: The relict leopard frog is a small, spotted frog with an adult body length of 1.75 to 3.5 inches. The dorsal color is brown, gray, or greenish with greenish-brown spots. A glandular dorso ...

DESCRIPTION: The Bay checkerspot is a medium-sized butterfly with a wingspan of a little more than two inches. The top surfaces of its wings have black bands along all the veins that sharply contrast ...

Having collected the most recent census data from state and federal bald-eagle managers in each of the lower 48 states and the District of Columbia, the Center for Biological Diversity has determined ...

The first species ever to be emergency-listed as an endangered species in Canada, the Oregon spotted frog was on the U.S. candidate list for 23 years before it federal protection in the United States.

Despite their dainty appearance, desert kit foxes are hardy animals, well adapted for living in the hot, harsh desert habitat from which they never stray. This cat-sized kit fox subspecies has long, ...

After Hurricane Andrew ripped through South Florida in 1992, the already-scarce Miami blue butterfly almost went extinct: No one recorded a single sighting for years. Finally, in 1999, a cheer went up ...

The U.S. Fish and Wildlife Service protected jaguars as endangered in 1972. But in 1980, responding to objections, the Service removed jaguars within the United States from the endangered species list ...

Deep-sea mining may irreparably harm ocean ecosystems before we even have a chance to fully study its impacts. That's one reason the Center has taken a lead role against deep-sea mining. We're ...

Atrazine is one of the most commonly used herbicides in the United States: Approximately 80 million pounds of it are used across the country each year. It's a common contaminant of ground, surface and ...