Quick Take Female ferrets (jills) only ovulate after mating, so unpaired jills can stay in heat with high estrogen for weeks.

Well, in this case, the story is real. For the first time in U.S. history, a cloned endangered species has produced offspring. SUMMERS: The U.S. Fish and Wildlife Service recently announced that ...

Two endangered baby black-footed ferrets have been born, but these babies are extremely unusual—they're both clones. Noreen was born at the National Black-Footed Ferret Conservation Center in Colorado ...

PHOENIX — Twenty-one black-footed ferrets were recently born at the Phoenix Zoo's Arthur L. and Elaine V. Johnson Conservation Center, part of an ongoing effort to increase their populations in North ...

The United States Department of Agriculture has filed two complaints against the University of Iowa after an investigation found multiple ferret babies, known as kits, had died as a result of being ...

CEDAR RAPIDS, Iowa (KCRG) - The United States Department of Agriculture has filed two complaints against the University of Iowa for the deaths of multiple ferrets. These stories are similar to the ...

CHAMPAIGN, Ill. -- Biologists studying early pregnancy in ferrets have isolated a protein vital to embryonic implantation. The discovery at the University of Illinois at Urbana-Champaign eventually ...

ARLINGTON, Va. - Knowing what makes a ferret pregnancy take hold could help biologists save endangered species or understand how tumors spread. Specifically, biologists examining early pregnancy in ...

In a quiet building between the camels and cheetahs, five black-footed ferrets have given birth to 25 kits, marking what could be the Phoenix Zoo's most successful breeding season of the endangered ...

Wildlife agencies want to expand the reintroduction area of the endangered black-footed ferret and make it easier for private landowners to participate in the recovery program. A proposed rule would ...

One species of mustelid is particularly adept at maneuvers below the ground – the ferret. Ferrets hunt in tight and twisty burrows, bending their bodies up to 180 degrees, both vertically and ...

Fourteen endangered black-footed ferrets were released this week in a prairie dog colony as part of a decades-long effort to restore the rarest mammal in North America, Colorado Parks and Wildlife ...