The black fur allele has fitness costs but also confers higher immunity against canine distemper virus, making mix-and-match mating key to population survival. Katherine Irving is an intern at The ...

Most of the 2,500 to 3,000 wolves in Poland are gray with red or black accents. Black fur comes from a genetic mutation that was likely in domesticated dogs thousands of years ago. The dark fur is ...

The gray wolf, also known as the timber wolf or the western wolf, is a canid native to the wilderness and remote areas of North America, Eurasia, and North Africa. It is the largest extant member ...

Our earliest mammalian ancestors avoided the dominant dinosaurs by only coming out at night and having uniformly dark, grey-brown fur for camouflage.

DESCRIPTION: Gray wolves are the largest wild members of the dog family, with adults ranging from 40 to 175 pounds. Wolves' fur color is frequently a grizzled gray, but it can vary from pure white to ...

The annual census found 286 Mexican gray wolves in Arizona and New Mexico, an 11% increase over last year and the ninth straight year of growth. Wildlife managers say the continued growth in ...