Beaver

The Beaver is an animal minimally seen in the How to Train Your Dragon Franchise.

Description
The beaver is a rodent of the genus Castor, which includes two actual species: the North American beaver (Castor canadensis) and the Eurasian beaver (Castor fiber). It is the second largest rodent after the capybara.

The beaver is known for its natural trait of building dams on rivers and streams, using tree logs, which it cuts with its long, constantly growing teeth. It is also known for its unique alarm signal: when in danger, the beaver will rapidly dive while forcefully slapping the water with its broad tail, alerting other beavers of a possible threat.

Function
In the franchise, a dead beaver is seen hangig on a wall, impling that is used for ornamental purposes.

In real life, the beaver was haunted almost to near extintion for its fur. Beavers produce a substance called castoreum, which is used in medicine.

Look And Find: How to Train Your Dragon
In this book, a dead beaver can be seen pinned on a wall in the background.

Shovelhelm
The Shovelhelm's social behavior of building might have been inspired from a beaver.