How strong are bears ounce per ounce?

Yahoo! Amswers writes:pound per pound it is the golden moles. Their are more than one species but they are all VERY strong. A 2 ounce mole has been recorded as moving a brick in excess of 6 pound off its cage and escaping. Along with the brick it also had to lift the lid of the container which weighed in at 8 ounces. So that would be 43 times its own weight.Why so strong? Two reasons: First, unlike true moles they have a set to their fur and can not reverse. They get stuck, sort of like when a kid sticks his head between two bars and can not pull it back out because their ears get in the way (they lay flat going in but hang coming out). To turn around they have to somersault inside the tunnel. If they can not somersault they must force their way forward. Second one species does not even live in a tunnel since the sand it lives in collapses as it tunnels. Therefore it literally tunnels and 'swims' through a sea of sand. It takes a LOT of strength for either.