Beaver populations in Canadian cities have seen a resurgence in numbers in the decades since the decline of the fur trade.
In 2016, approximately 200 beavers live within the city limits of Calgary, while an estimated 100 beavers live in Winnipeg.
In the same year, it was estimated that several dozen beavers live within the city limits of Vancouver.
Toronto does not keep count of its local beaver population, although an estimate from 2001 places its local beaver population at several hundred.

Several cities in the United States have seen the reintroduction of beavers within their city limits.
For example, beavers were trapped to near extirpation and had not been seen in New York City since the early 1800s.
It was after 200 years that a beaver returned to New York City, making its home along the Bronx River.

In Chicago, several beavers have returned and made a home near the Lincoln Park's North Pond.
The "Lincoln Park beaver" has not been as well received by the Chicago Park District and the Lincoln Park Conservancy, which was concerned over damage to trees in the area.
In March 2009, they hired an exterminator to remove a beaver family using live traps, and accidentally killed the mother when it got caught in a snare and drowned.

Outside San Francisco, in downtown Martinez, California, a male and female beaver arrived in Alhambra Creek in 2006.
The Martinez beavers built a dam 30 feet wide and at one time six feet high, and chewed through half the willows and other creekside landscaping the city planted as part of its $9.7 million 1999 flood-improvement project.
When the city council wanted to remove the beavers because of fears of flooding, local residents organized to protect them, forming an organization called "Worth a Dam".
Beaver populations in Canadian cities have seen a resurgence in numbers in the decades since the decline of the fur trade. In 2016, approximately 200 beavers live within the city limits of Calgary, while an estimated 100 beavers live in Winnipeg. In the same year, it was estimated that several dozen beavers live within the city limits of Vancouver. Toronto does not keep count of its local beaver population, although an estimate from 2001 places its local beaver population at several hundred.
Several cities in the United States have seen the reintroduction of beavers within their city limits. For example, beavers were trapped to near extirpation and had not been seen in New York City since the early 1800s. It was after 200 years that a beaver returned to New York City, making its home along the Bronx River.
In Chicago, several beavers have returned and made a home near the Lincoln Park's North Pond. The "Lincoln Park beaver" has not been as well received by the Chicago Park District and the Lincoln Park Conservancy, which was concerned over damage to trees in the area. In March 2009, they hired an exterminator to remove a beaver family using live traps, and accidentally killed the mother when it got caught in a snare and drowned.
Outside San Francisco, in downtown Martinez, California, a male and female beaver arrived in Alhambra Creek in 2006. The Martinez beavers built a dam 30 feet wide and at one time six feet high, and chewed through half the willows and other creekside landscaping the city planted as part of its $9.7 million 1999 flood-improvement project. When the city council wanted to remove the beavers because of fears of flooding, local residents organized to protect them, forming an organization called "Worth a Dam".
Beaver