LAKE TAHOE, Calif./Nev. – Don’t let their name fool you; river otters are found in Lake Tahoe, away from their more well-known homes in the Upper Truckee River and Tahoe Keys.
And don’t let their appearance fool you; they aren’t “cute” if you happen to be swimming with them.
Two recent river otter-human encounters left the humans bleeding and shocked. One was at Pope Beach and the other at Hidden Beach.
River otters are native to Lake Tahoe and are very territorial, so if they are attacking humans, they feel threatened, according to wildlife authorities.
A Reno woman was swimming at Hidden Beach on Sunday, August 30, 2026, when she felt something grab her by her leg and pull her under. The otter attacked her with their teeth and claws, and it kept attacking her feet as she tried to swim to shore.
She had 38 stitches and is receiving rabies shots.
Game wardens from the Nevada Department of Wildlife (NDOW) responded to the Hidden Beach attack, but could not find the otter. At this time, they have no plans to trap the otter, as the otter was behaving as they do.
NDOW is working with Nevada State Parks to post signage in the area to make visitors aware of the incident. River otter attacks on people are very rare, but otters are predators and can become defensive or aggressive if they feel threatened or cornered.
“We encourage people to give otters and other wildlife plenty of space and never attempt to approach or interact with them,” said Kenzie Margiott of NDOW.
Margiott did say they will continue to monitor the situation and respond appropriately if there are more reports about otters.
Over on the California side of the lake, Bob Daly of Stateline, Nev., was on a family outing at Pope Beach on August 9, 2026. He told reporter Ashleigh Goodwin he was following his normal routine, swimming from his boat toward the marked area of the beach, cool off, and return. As he headed back toward his family, Daly said something connected with his foot about 35 yards from shore.
“It was a cute little Disney moment,” Daly said of seeing the otter across from him. “Aw, ain’t that cute. It wasn’t cute for very long.”
Wonder became confusion, then terror, when the animal submerged and “torpedoed” his feet and legs.
“It would pop up, get its bearings about six to eight feet away, look at me, dive under, and come for me again,” Daly said. He said the interaction was maybe four to five minutes, but felt much longer.
He told Goodwin he was trying to keep the animal in sight, which forced him into an awkward vertical swimming position. Daly screamed for help while the otter surfaced, submerged, charged, struck and disappeared—again and again.
At Barton’s Emergency Room, Daly had his eight bloody bite and scratch marks treated and began a series of rabies shots.
The California Department of Fish and Wildlife (CDFW) said river otters will attack humans for two main reasons: (1) They are protecting their offspring. Females can become fiercely aggressive when defending their young pups, particularly in the mid-to-late summer; and (2) their territorial defense. Otters view certain stretches of water or docks as their personal hunting territory and may snap if they feel crowded.
When asked if otter attacks are very common, Peter Tira of CDFW said no, but they do happen. He referred to the 2023 attack at Serene Lakes in Placer County. A swimmer was left with about 40 puncture wounds after being bitten by a river otter about 12 times. It was the second attack at Serene Lakes. Tira said otters have also attacked dogs in the Redding area in the past.
Otter attacks on people are very rare; they are a predator species that is very good at swimming and has very sharp teeth.
“They won’t normally attack people or larger animals. However, they will defend their territory if they feel threatened, whether that’s a real threat or a perceived threat,” Tira said.
Their territory can be up to 30 square miles, though a more typical range is 3 to 15 square miles. Lake Tahoe is 193 square miles. North American river otters grow 2.5 to 5 feet long and weigh between 10 and 33 pounds.
Wildlife officials advise that if an otter attacks, you should fight back aggressively, get out of the water immediately, and seek medical attention (including rabies evaluations) due to the high risk of infection.