Wildlife officials in Anchorage, Alaska, have issued a warning about aggressive otters after three reported attacks on humans and pets.

On Friday, the Alaska Department of Fish and Game implored the citys residents to be alert around local lakes and rivers after a spate of incidents that may or may not have involved the same otter group:

• On Sept. 1, a river otter bit 9-year-old Ayden Fernandez at a duck pond in East Anchorage. Aydens mother, Tiffany, showed the Anchorage Daily News a video in which one otter broke away from a group and chased her two sons and their friends. The children all ran, but the otter caught up to Ayden, biting him on both legs, his foot and his back as he fell to the ground.

• This week, a woman had to rescue her dog from what the Fish and Game Department described as a similar group of river otters at the citys University Lake, and wound up getting bitten herself.

• A river otter bit a different dog at University Lake the same day that the woman was bitten.

The Fish and Game Departments statement said, It is possible that the same group of river otters were responsible, noting that river otters can travel to different areas over both land and water.