Why do animals hibernate?
ASK A RESEARCHER: All kinds of animals go into hibernation. Some hibernate all winter, while others "turn off" their bodies for just a few hours.
Every year, search and rescue dogs find between 40 and 50 missing people in Norway. They are trained through interaction and rewards. “They’re clearly sad when the people they find are dead,” says Bjørn Tore Ulsrud, from Norwegian Search and Rescue Dogs.
Using surgically implanted sensors, researchers have for the first time been able to measure precisely what happens in the body of the moose during the changing seasons. Their body temperature and pulse are at their lowest in early spring - when conditions are the toughest.
Salmon are briefly immersed in warm water so the lice lose their grip. The treatment is the most common non-chemical delousing method used at Norwegian fish farms. But its imminent ban comes as new research reveals the pain and injury to the salmon.
OPINION: Wire fences and walls along country boarders are a huge problem for wildlife. Animals die after getting entangled in the wires and many species are cut off from important seasonal habitats. This situation forces a re-think of conservation strategies across borders, says researcher.
Last year so many rodents roamed Norwegian forests that residences were overrun, from mountain cabin attics to house basements. This summer in southern Norway, rodent numbers have plummeted to roughly one-hundredth of what they were just a year ago. Yet no one really knows what’s powering these enormous population swings.
The Arctic may be a long way from the industrial world, but harmful chemical substances find their way northward and concentrate in animals there. Researchers have now found a disturbing trend: concentrations of one harmful chemical family are higher in thin Arctic foxes than in their more well-fed brethern.