National Geographic : 1971 Apr
"Bear!" they shouted and rushed outdoors. "Turn Tokto loose," I said to Nils. "I'll get the syringe gun." We had not expected a visit from bears while we had dogs in camp. But here was a female with two cubs, sniffing the antenna mast. Like a gray shadow Tokto circled them. Suddenly a box on the ear by the mother sent the dog spinning. He yelped, tucked his tail between his legs, and disappeared. Without much difficulty, we drugged all three bears and pulled them into a cage by 584 the laboratory. Later we found Tokto unhurt, cheerfully raiding our meat racks. Nils constantly needed captive bears, such as these three, for his research on how the species has adapted to the Arctic's extreme climate. By implanting tiny radio transmitters under their skins, he gathered data about how the bears control their body temperature.* *For accounts of similar research, see, in NATIONAL GEOGRAPHIC: "Trailing Yellowstone's Grizzlies by Radio," August 1966; and "Knocking Out Grizzly Bears for Their Own Good," August 1960, both by Frank Craighead, Jr., and John Craighead.