Boston Man Jumps Into Freezing Charles River to Rescue His Dog
On Marathon Monday, April 21, 2025, Hans Nagrath, a Boston real estate agent, jumped into the Charles River to rescue his 2-year-old goldendoodle, Benny, after the dog chased geese into the frigid water.
Nagrath was out for a run with Benny when the dog suddenly took off after a flock of geese and dove into the river. Despite Nagrath’s calls for Benny to return, the dog continued swimming farther from shore, prompting Nagrath to act.
“I didn’t really have time to think about it,” Nagrath told Boston 25 News. “I was just thinking, if Benny were to drown, I couldn’t live with myself.”
Water temperatures in the Charles River were in the low 40s Fahrenheit, posing a significant risk of hypothermia. Nagrath described the experience as terrifying, stating he feared he might drown during the rescue attempt.
After reaching Benny, Nagrath struggled to keep the dog afloat even as swimming back to shore. Onlookers eventually assisted in pulling both Nagrath and Benny from the water. Both were unharmed despite the cold conditions.
Nagrath later reflected on the incident, expressing regret for not seeking help or a flotation device before entering the water. He emphasized that Benny would not be allowed off-leash near the river for the foreseeable future.
Key Takeaways
- Quick action can save lives, but assessing risks before entering dangerous situations is crucial.
- The Charles River’s cold water temperatures, even in spring, present serious hazards.
- Pet owners should always keep dogs leashed near bodies of water to prevent accidents.
Frequently Asked Questions
What should I do if my dog falls into a cold body of water?
If your dog enters cold water, first assess the situation from shore. Look for flotation devices or seek help from others before entering the water yourself. If you must enter, ensure you have a plan to get both yourself and your dog back to safety.

How cold is the Charles River in the spring?
In the spring, the Charles River’s water temperature typically ranges from the low to mid-40s Fahrenheit, which can lead to rapid heat loss and increased risk of hypothermia.
Why did Benny chase the geese into the river?
Benny, like many dogs, has a strong instinct to chase birds. When he saw the geese, his natural prey drive kicked in, causing him to pursue them into the water without hesitation.