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Study Documents Wolf Hauling Crab Trap by Buoy Line in Possible First for the Species

Scientists remain split on whether the rope-pulling meets strict definitions of tool use.

Overview

  • Motion-triggered cameras set after damaged traps recorded a female coastal wolf swimming to a buoy, towing the line, beaching the trap, and eating the bait.
  • The footage was captured on May 29, 2024 in Haíɫzaqv/Heiltsuk territory on British Columbia’s central coast, with findings published in November 2025 in Ecology and Evolution.
  • The traps belong to the Heiltsuk Nation, which set them to curb invasive European green crabs that threaten eelgrass and local shellfish resources.
  • Study authors Kyle Artelle and Paul Paquet say the sequential, goal-directed behavior may constitute tool use, a view challenged by experts who apply stricter criteria.
  • Researchers also documented a separate clip of a wolf attempting a similar line pull and plan continued monitoring to assess how widespread the behavior is.