A 5-day-old giraffe calf at the San Diego Zoo Safari Park is receiving specialized care at the Safari Park’s Paul Harter Veterinary Medical Center. The male calf, born Sunday, Jan. 27, 2019, was observed having difficulty nursing from his mother.

The world’s endangered okapi population has increased by one this month, after okapi mom Subira gave birth to her first calf at the San Diego Zoo.

Two lactating African elephants—Umngani (pronounced OOM-gah-nee), who gave birth to a healthy female calf, Mkhaya or “Kaia”, on Sept. 26, 2018; and Ndlulamitsi, known as Ndlula, who gave birth to a healthy male calf, Umzuli-Zuli or “Zuli,” on Aug. 12, 2018—are participating in a nutritional study, allowing researchers to study the content of their milk.