When Do Panda Cubs Start Looking Cute?

The National Zoo's giant panda gave birth to tiny twins over the weekend -- and, just like all newborn pandas, they're tiny, blind and nearly hairless. So when do they start looking like, well, pandas? Take a look back at how their big sister, Bao Bao, grew up.

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National Zoo
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Smithsonian's National Zoo
The National Zoo's giant panda Mei Xiang gave birth to tiny twins over the weekend -- and, just like all newborn pandas, they're tiny, blind and nearly hairless. So when do they start looking like, well, pandas? Take a look back at how their big sister, Bao Bao, grew up. Composite by NBC Washington.
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Smithsonian's National Zoo
The image on the left shows Bao Bao on Aug. 25, 2013, just two days after her birth, weighing 4.8 ounces. On the right, we see one of her new little siblings Sunday, weighing about 4.86 ounces at one day old. (This is the larger of the two newborns). Composite by NBC Washington.
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National Zoo
Panda cubs are widely described as being about the size of a stick of butter. Here, a tiny, two-day-old Bao Bao gets a vet exam on Aug. 25, 2013.
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National Zoo
Like her newborn siblings, Bao Bao once fit easily in the palm of a vet's hand.
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National Zoo
CUTENESS ALERT: After just a couple of weeks, Bao Bao began looking a bit more like... well... an actual panda. It took zoo vets about three weeks to be able to conduct a full exam -- protective mama Mei Xiang wasn't having it any earlier. Here's Bao Bao on Sept. 16, 2013.
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National Zoo
Bao Bao grew quickly, weighing in at slightly less than two pounds on Sept. 16, 2013. Her signature black panda markings had shown up by then, too.
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National Zoo
By the time Bao Bao was a month old, she'd entered that precious Plastic Container Phase. On Sept. 26, 2013, keepers deemed her healthy, "wiggly and squirmy." By then, Bao Bao was tipping the scales at more than three pounds.
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National Zoo
Bao Bao was very active and was trying to crawl, but she wasn't quite able to support her own weight yet. (Sept. 26, 2013)
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National Zoo
On Oct. 17, 2013, keepers announced Bao Bao had crossed the five-pound mark, and her eyes partially opened.
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National Zoo
Keepers noticed Bao Bao's right eye began to open Oct. 4, 2013, and a week later, both eyes had partially opened, they said. Her ears had also opened and she was reacting to the noises she hears in the panda house.
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National Zoo
At eight weeks old, she was strong enough to push herself up on her front two legs, and to turn herself over when lying on her back. (Oct. 17, 2013)
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National Zoo
At this point, the zoo also provided a now-iconic video of Bao Bao screeching in indignation over having to be measured during her exam. The HORROR! (Oct. 17, 2013)
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National Zoo
On Oct. 23, 2013, Bao Bao snoozed through a vet exam.
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National Zoo
But she did wake up at some point, and waved to the camera. (Oct. 23, 2013)
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National Zoo
Bao Bao (still an expert waver) weighed in at 7.7 pounds at about nine weeks old. (Oct. 29, 2013)
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National Zoo
Over the weekend of Nov. 16-17, Bao Bao took a few steps -- her first -- but at one point, tired herself out to the point that she had to stop and take a nap. Hey, it happens.
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National Zoo
By Nov. 15, Bao Bao weighed more than 10 pounds. At this point, she was still officially without a name -- it wouldn't be announced until a ceremony on her 100th day of life, Dec. 1, 2013.
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National Zoo
Happy birthday, Bao Bao! In August 2014, she got to chow down on a fruitsicle cake for her first birthday.
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National Zoo
On Saturday, Bao Bao became a big sister to the newborn twins -- and the very next day, she celebrated her second birthday with another delicious fruitsicle cake.
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