How do beavers change as they grow into adults?

As beavers grow into adults, they undergo several physical and behavioral changes. Their size increases significantly, with adults weighing between 40 to 60 pounds, and they develop strong, flat tails and large front teeth adapted for gnawing wood. Behaviorally, they shift from a more juvenile playfulness to a focus on building dams and lodges, which are crucial for their habitat and protection. Additionally, adult beavers often establish territories and form monogamous pair bonds, contributing to family structures within their colonies.