Three litters of critically endangered American red wolves, numbering less than two dozen in the wild, were born at the North Carolina Zoo.

The zoo said the litters, which total 12 puppies, were born in three days at the end of April.

All of the puppies and their mothers are healthy and doing well, the zoo added.

The new puppies bring the total number of red wolves currently in the zoo’s breeding program to 36, making it the second-largest pack in the United States after the Point Defiance Zoo and Aquarium in Tacoma, Wash., According to the North Carolina Zoo.

Three must be the lucky number because we are so happy to share that we have 3 litters of red wolves for a total of 12…

Posted by North Carolina Zoo on Monday, May 17, 2021

Zoo officials said there were only 15 to 20 red wolves left in the wild, all in eastern North Carolina, and they were considered the most endangered canines in the world.

A litter has been born in the public red wolf habitat and the cubs will likely be visible from mid-June, when they begin to venture outside the den.

The wolf family will be moved to the non-public breeding area when the puppies are older and weaned from their mother.

The other two litters were born in non-public viewing areas of the zoo, officials said.