Maryland Parks Grapple with Unprecedented Beaver Attacks Amidst Rabies Concerns

Wildlife officials in Maryland are confronting a perplexing and alarming series of events after three visitors to state parks were subjected to beaver attacks within a single month, with the most recent incident involving a 10-year-old girl who sustained a bite at a summer camp in Seneca Creek State Park last week. This string of aggressive encounters, particularly concerning given that two of the implicated beavers tested positive for rabies, has raised significant questions about wildlife behavior and public safety in popular recreational areas.

The latest attack occurred on August 14th at approximately 3:30 p.m. at a well-known swimming hole adjacent to the Potomac River within Seneca Creek State Park. The young victim was part of an organized group enjoying swimming and wading activities when the beaver reportedly approached and bit her, resulting in a laceration to her upper leg. Alert camp counselors were able to intervene, dislodging the animal and allowing it to escape into the water. The injured child was subsequently transported by her family to Suburban Hospital in Bethesda, Maryland, for immediate medical attention. While no other injuries were reported from this specific incident, nearby canoers reported that a beaver appeared to "attempt to charge" one of their boats, underscoring a potential heightened level of aggression from the local beaver population.

In response to the attack, park officials swiftly initiated a search for the animal and, as a precautionary measure, temporarily closed the immediate area and a nearby trail to the public until further notice. The Maryland Department of Natural Resources (DNR), responsible for the state’s wildlife management, has been actively involved in the investigation. While a request for comment from Backpacker magazine by the time of publication yielded no immediate response, the agency’s actions indicate a serious commitment to understanding and mitigating the situation.

This recent attack in Seneca Creek marks the third such incident involving beavers and humans in Maryland within the past three weeks, highlighting a disturbing pattern. The two preceding attacks took place at Cunningham Falls State Park, located approximately 36 miles north of Seneca Creek. The first of these occurred on July 26th, when a 13-year-old swimmer was also attacked. In that instance, park officials were able to capture and euthanize the animal responsible. Subsequent laboratory testing confirmed the presence of the rabies virus in the euthanized beaver, a finding that immediately escalated concerns regarding the potential for wider rabies transmission.

Just over a week later, on August 5th, a 19-year-old fisherman encountered a beaver at Cunningham Falls State Park and sustained a bite to his ankle. He independently sought medical treatment at Meritus Medical Center in Hagerstown, Maryland, where he received both a rabies exposure treatment and a tetanus shot. Natural Resource Police officers later apprehended and euthanized the beaver involved in this second incident, and, alarmingly, it also tested positive for rabies.

The repercussions of these two rabies-confirmed attacks at Cunningham Falls were significant. Multiple areas within the park were closed to the public, including a beaver dam near the site of the July 26th incident, which officials dismantled. The DNR launched a comprehensive investigation into a possible rabies outbreak, implementing enhanced surveillance measures. These included "nighttime monitoring" and daytime patrols specifically aimed at locating and removing any additional beavers exhibiting abnormal behavior or posing a threat to public safety.

Despite the proximity of the two parks, the DNR has stated that they do not currently consider the Seneca Creek and Cunningham Falls incidents to be related. This assessment is based on the geographical distance between the two locations and the known social behaviors of beavers, which typically exhibit territoriality and do not readily form large, interconnected colonies across such distances. However, the repeated nature of these attacks, especially with the confirmed rabies cases, necessitates a thorough and ongoing investigation into the underlying causes.

The rarity of beaver attacks on humans cannot be overstated. These incidents are exceptionally uncommon, and encounters with beavers that result in bites are even rarer. Historically, the two rabies-positive beaver attacks reported in Maryland in recent weeks represent the total number of such incidents recorded by state wildlife officials since 2015. This stark statistic underscores the unusual nature of the current situation. Further contextualizing this rarity, a 2025 case report published by the Wilderness Medical Society indicated a total of only 40 confirmed cases of rabies in beavers across the entire United States between 2002 and 2021. This data strongly suggests that the recent cluster of attacks in Maryland is a significant anomaly.

When beaver attacks do occur, however, the consequences can be severe. Beavers are equipped with powerful incisors, capable of inflicting deep and serious wounds. The Wilderness Medical Society report detailed a particularly harrowing encounter involving a 46-year-old swimmer in the Connecticut River. The individual described feeling something brush against him, followed by a "vicious attack." The beaver reportedly bit and clawed him on three separate occasions, eventually clamping down on his left arm with such force that it refused to release. The swimmer managed to reach the shore and, in a desperate act of self-defense, clubbed the animal to death with a log. He later recounted that the beaver had been "trying to drag him underwater." Significantly, this animal also tested positive for rabies, reinforcing the danger posed by infected beavers.

It is important to note that rabies is not particularly common in beaver populations. In fact, rabies is relatively rare in all rodent species. In the United States, the primary carriers of the rabies virus are more commonly found among other wildlife groups, such as bats, raccoons, and skunks. The disease, while serious, is not a widespread epidemic among the general U.S. population, with an average of fewer than 10 human fatalities attributed to rabies annually.

The Maryland DNR emphasizes that beavers are generally non-aggressive animals that actively avoid conflict with humans. Their typical behavior involves maintaining a safe distance and seeking to escape confrontation. However, the agency strongly advises the public to always maintain a minimum viewing distance of 25 yards from any wild animal, including beavers. This recommendation is a standard guideline for wildlife observation and aims to prevent unnecessary stress on the animals and reduce the risk of negative interactions.

The investigation into the rabies-positive beavers is ongoing, with officials working to determine the source of the infection and whether any other beavers in the affected areas may also be infected. The closure of park areas and heightened surveillance are critical steps in protecting public safety. The DNR’s proactive measures, including the capture and testing of animals, are essential in preventing further incidents and containing any potential spread of the rabies virus. The rarity of these attacks, coupled with the confirmed rabies diagnoses, presents a unique challenge for Maryland wildlife authorities, requiring a careful balance of public access to natural resources and the imperative to ensure visitor safety. The long-term implications for beaver management and public education in Maryland will likely be shaped by the findings of these ongoing investigations.