Wriggling Panda Cub Submits to 4th Physical

The National Zoo's giant panda cub got his fourth physical exam yesterday and promptly demonstrated what legions of pandacam viewers already know: He is healthy and continuing to develop at a rapid pace.

Robust and squirmy, the 7-week-old cub weighed 6.2 pounds, an increase of two pounds since his exam Aug. 18 and a jump of more than four pounds since zoo staff first weighed him Aug. 2.