Zoo staff noticed on Thursday that Kira had gone into labor, but as of Friday morning she had not delivered.
With the assistance of the additional medical staff, the team delivered a healthy, happy baby boy who weighed in at exactly 5 pounds.
After a hard labor for mom and an emergency medical intervention, the Philadelphia Zoo welcomed a new - possibly the cutest - baby western lowland gorilla on Friday.
The surgeons, anesthesiologists and an OB-GYN were prepared to respond if anything went wrong during labor or Kira's pregnancy.
Daisy was the name of the baby daughter of one of the zoo's keepers, born exactly four years before the baby gorilla.
Gorilla gives birth with help from doctors who treat people
The baby gorilla is now living comfortably with his mom and father, 32-year-old Motuba, in the zoo's PECO Primate Reserve.
After 1 ½ hours, the team delivered the male baby using forceps and an episiotomy, a procedure to enlarge the birth opening. Officials say it was the first assisted vaginal delivery for a gorilla that the zoo is aware of since 2000.
Kira, 17, one of two female gorillas at the zoo, gave birth for the first time on Friday.
The International Union for Conservation of Nature lists Western lowland gorillas in the wild as critically endangered.
The zoo called in the help of doctors who normally treat humans, from an OB-GYN to surgeons and anesthesiologists from local hospitals and institutions to assist in the hard birthing process for the newborn's mom, 17-year-old Kira.
Kira was reunited with the baby by Saturday morning and has been continuously cradling and nursing him.
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