The Yukon Fish and Game Association executive director believes it's just a matter of time before a disease outbreak, such as pneumonia, could spread from domestic sheep to wild Dall sheep.

The average weight of adult reindeer on Svalbard, north of Norway, has fallen to 106 pounds from 121 pounds in the 1990s

Two extreme weather events in 2006 and 2013 caused mass starvation among the reindeer herds, and researchers for the first time have linked these extreme weather events in the coastal mainland in northwest Russia with sea ice loss in the adjoining Barents and Kara seas.

Moose and other species have advanced north with warming temperatures. University of Alaska Fairbanks assistant professor of water and environmental research Ken Tape said movement of boreal species into far northern Alaska has corresponded over the last century with earlier snow-melt and river ice out.

Biologists on Canada's western coast are bracing for the arrival of a deadly disease called white-nose syndrome in British Columbia and Yukon's bats, but the disease's impact is still unclear.

A mysterious anthrax outbreak over the summer killed more than 2,300 reindeer and at least one child.

Freak warm weather followed by a freeze in winter 2013-14 caused an ice-over of pastures which led to the deaths of some 70,000 reindeer in a famine. This summer, there was an outbreak of deadly anthrax after the hottest Arctic summer on record.

Young moose eating rose hips.

More than 300 wild reindeer have been killed by lightning in central Norway.

Russian officials have said the death of a 12-year-old boy, a member of a reindeer-herding family from the Yamal tundra 1,300 miles north of Moscow, was the first fatality in Siberia linked to the pathogen since 1941. Twenty others have been diagnosed with anthrax.

Melted permafrost that exposed an infected reindeer carcass is believed to have resulted in the cases that killed a 12-year-boy and sickened eight others.

Land Mammal

An enzyme protects squirrels during and after hibernation, and something similar could help people whose hearts shut down, a new study finds.

Kayla Desroches/KMXT It looks like it’ll be a ratty season for Kodiak. The rodents are running rampant this year, at least according to one local pest cont

Brown bear (Ursus arctos) caught in village.

Caribou calving on the Kobuk River, seems early to calf.

After a bat was found near Seattle with deadly White Nose Syndrome, a conservation group has teamed up with cave explorers to find out if B.C.'s bats are also affected. The White Nose fungus can kill 99 or even 100 percent of a population it infects.

In less than three years, the number of animals on the island of Kolguyev dropped from more than 12,000 to only 153.