San Diegans Ernest and Evelyn Rady have made a record-setting commitment in support of the San Diego Zoo’s Animal Ambassador program. The Radys have pledged $20 million, of which $15 million will be a challenge grant that must be earned with matching donations from other Zoo supporters.

If you didn’t already have enough reasons to visit the San Diego Zoo this week, three cute new arrivals may motivate you to drop everything and stop by. Over the past few months, Zoo animal care staff have welcomed three female mammal newborns—including a hamadryas baboon; a takin calf, listed as Vulnerable on the International Union for Conservation of Nature (IUCN) Red List of Threatened Species; and an Endangered siamang.

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.