In British Columbia, new findings could affect local fur-trapping policies or convince authorities to delay the trapping season.
In 2016, wildlife biologist Clayton Lamb was securing a GPS collar to a tranquilized grizzly bear in southeastern British Columbia when he noticed one of its paws was missing three toes. Weird, he remembers thinking, but not surprising for the rough-and-tumble animals. Then, three more grizzlies popped up sporting similarly mangled paws. Anxious to solve the mystery behind this grisly trend, Lamb and colleagues launched a yearslong investigation.
Lamb’s team wondered whether body-gripping traps, a bit like oversized mousetraps, could be to blame. The small traps are usually baited with beaver meat and deployed throughout the mountains of southeastern British Columbia from November through February to capture weasel-like critters called martens for their fur.
Could these traps sever bears’ toes from their paws? To find out, the team next stuck paws from deceased grizzlies into several traps commonly employed in British Columbia, then examined the carnage using x-rays.
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