They were extinct for 400 years, but beavers were illegally released in Tayside in the first part of this century.
Their population has grown rapidly to more than 400 and many farmers have complained about their dams flooding prime agricultural land.
它们的总数量已经快速增长到了 400 多只，而且很多农民已经就河狸筑坝，淹没优质农业用地的问题进行了投诉。
But after ministers decided against a cull, they've now made moves to protect them. That will make it an offence to kill, injure or capture beavers without a licence.
Farming leaders have said they need to be controlled effectively. Scottish Natural Heritage is expected to publish guidance on how that can be achieved in the coming weeks.