Mama Bear Is Throwing A Wrench In Plans For Panda Twins

The panda twins born Saturday at Washington D.C.'s National Zoo are proving difficult to care for.

The zoo team had a plan to swap cubs every few hours so they could care for one while Mom cared for the other. But mama bear has been reluctant to let zookeepers make the swap. (Video via Smithsonian National Zoological Park)

The zoo said Tuesday it had been more than a day since they were able to get hold of the larger cub. 

The zoo says giant pandas have twins about 50 percent of the time, but this is only the third time it's happened in the U.S. And it's going to take a lot of human intervention for the twin cubs to survive. (Video via ABC)

The first week is especially high risk. Veterinarians gave the smaller cub antibiotics as a preventative measure.

And zoo workers are bottle feeding and incubating the twins when they're away from Mom.

Thankfully, the smaller cub seems to be doing well so far and has a healthy squeak. (Video via Smithsonian National Zoo)

This video includes images from Getty Images.