How old is the oldest beaver?

The oldest known beaver lived to be 27 years old. This was a female North American beaver who was studied in the wild.

It's important to note that this is an exceptional case. Most beavers in the wild live to be 10-12 years old. Their lifespan can be affected by factors like:

* Predation: Beavers have many predators like wolves, bears, cougars, and coyotes.

* Disease: They can be susceptible to diseases like rabies and tularemia.

* Habitat loss and degradation: Loss of suitable habitat can make it harder for beavers to survive.

* Human activities: Hunting, trapping, and habitat destruction can also impact beaver populations.

So, while a beaver can live to be 27, the average lifespan is significantly shorter.