Beavers have been living and breeding on River Otter , Devon for five years . They are the first wild beavers to breed in England for 800 years . The family of nine went completely unnoticed until a year ago . Ministers called for the rodents to be rounded up and put in a zoo . A spokesman said: "We will not tolerate any further incursions into our protected areas by these animals. And now the creatures have passed health checks including blood tests that screened them for the Echinococcus multilocularis parasite .
Beavers have been living and breeding on River Otter , Devon for five years . They are the first wild beavers to breed in England for 800 years . The family of nine went completely unnoticed until a year ago . Ministers called for the rodents to be rounded up and put in a zoo . Natural England said they could stay wild but only with careful monitoring . And now the creatures have passed health checks including blood tests that screened them for the Echinococcus multilocularis parasite .