thriving. out front with the assignment of the day. reporter: we are inside the panda exhibit here at the atlanta zoo hanging out with one of the older brothers of the panda cubs who were born here last month. now, most people who come to the zoo at this point can only see these cubs through panda cam when they are with their mom. but we got an up close look. this is panda b? this is cub b. reporter: meet the brothers causing sheer pandemonium at the zoo. they get cuter every time i see them. reporter: we suited up to go inside the panda nursery, i think i m set, to see how the only set of twin pandas are doing. they are on track with the other cubs we ve had here. reporter: every week doctors give each cub a thorough checkup. are you checking eyes? checking eyes, looking at
u.s. zoos to have pandas. cnn s alina macahado got a rare behind the scenes glimpse at the baby brothers. she s at the zoo in atlanta with a lot more. alina? reporter: hey, chris, we re inside the panda exhibit at the zoo. i m hanging out with the cub s older brothers on this side over here, this guy over here is po and on this side i don t know if you can see him through the foggy windows, that guy over there getting some treats his him is xilan. his birthday today, he just turned 5 years old. up until this point the people can only see the twin cubs through panda cam monitor because they are behind the scenes with the mom but we got an up close look. this is panda b, this is cub b. if it s possible, they get cuter every time i see them. we suited up to go inside the