Until a beaver burrow collapses, people above ground cannot work out where it is. So the underwater burrow entrances are being identified using survey vessels which have multibeam sonar devices ...

The ancient beaver used its long front incisors to dig its tight spirals, fixing its hind feet on the axis and, in Martin’s words, “literally screwed itself straight down into the ground.” But why go ...

The beaver is back! After an absence of about 400 ... But it really prefers to live in burrows in the river bank in small family groups called colonies. It's an expert at felling trees, not ...