Cue the squeals.
Panda-monium is hitting North America again; after a summer that saw the delight of two baby pandas at Washington’s National Zoo followed by heartbreak when one of them died, panda-fans have two more panda cubs to look forward to in the near future, this time at the Toronto Zoo.
The zoo confirmed today in a press release that Er Shun, a female giant panda on loan from China, is expecting two panda cubs. The first fetal heartbeat was detected on Friday; a second one was picked up on Tuesday, “much to our surprise.”
“While this is a positive sign, the following three to four weeks are very critical,” the Zoo said in a statement. “Toronto Zoo staff are cautiously hopeful for healthy births within this time frame.”
Er Shun was inseminated using sperm collected from Da Mao, the male giant panda in residence at the Toronto Zoo, along with two other male giant pandas from China.
This article originally appeared on Time.com.
