Preterm birth
James Elgin Gill (born on 20 May 1987 in Ottawa, Ontario, Canada) was the earliest premature baby in the world, until that record was broken in 2014. He was 128 days premature (21 weeks and 5 days' gestation) and weighed . He survived.
Fiona (hippopotamus)
Fiona's parents are Henry and Bibi. (Henry died at 36 in October 2017.) She is the first Nile hippo to be born at the Cincinnati Zoo in 75 years, and the first of the species to be scanned in the womb using ultrasound. She was born six weeks premature on January 24, 2017, with a birth weight of ; the recorded range of birth weights for the species at that time was . She was unable to stand and required bottle feeding with milk from her mother, supplemented with infant formula. This was the first time a hippopotamus had been milked and the milk analyzed. The following month, while teething, she began refusing her bottle and became dehydrated; a catheter for the delivery of intravenous fluids was inserted with the assistance of members of the vascular access team at Cincinnati Children's Hospital. The preemie team had previously sent the zoo a care package for her.