A lion cub at the National Zoo. (Photo by Mehgan Murphy, Smithsonian's National Zoo)

It's been a busy year for mother animals at the Smithsonian National Zoo. Take a look back at all the baby animals born recently, and vote for your favorite.

TBD will do a behind-the-scenes profile on the animal(s) that get the most votes, so make your choice and share this with your friends. Voting is open for two weeks, until Jan. 25.

All photos are courtesy of the Smithsonian National Zoo, which has an excellent Flickr account where you can see many more photos.