In this April 4, 2017 photo, Biologist Marta Llanes looks at baby chimpanzee Ada, right, while Anuma II, center, sleeps on a bed, at her apartment in Havana, Cuba. While zoos in other countries may have specialized facilities for raising baby animals, in Cuba the job falls to Llanes, a 62-year-old zoologist who has cared for 10 baby chimps in her central Havana apartment since she started work at the city zoo in 1983. (Photo by Ramon Espinosa/AP Photo)





In this April 4, 2017 photo, zoologist Martha Llanes looks after baby chimpanzee Anuma II as she plays with the house cat Ty, at her apartment in Havana, Cuba. The floor is covered with toys, all sharp objects have been hidden away and the electric sockets covered to prevent a dangerous accidental shock. (Photo by Ramon Espinosa/AP Photo)





In this April 4, 2017 photo, baby chimpanzee Anuma II, left, and Ada rest in a chair at zoologist Martha Llanes' apartment in Havana, Cuba. Llanes' apartment looks like any that's home to two infants, albeit infants able to scramble up chairs, tables and virtually any other object with already-strong arms and legs and feet with opposable thumbs. (Photo by Ramon Espinosa/AP Photo)





In this April 4, 2017 photo, zoologist Martha Llanes caresses baby chimpanzee Anuma II, right, while Ada plays, at Llanes' apartment in Havana, Cuba. She leaves her home a few hours each week when another zoologist delivers milk, fruit and cleaning products, and cares for the animals while Llanes takes a break. (Photo by Ramon Espinosa/AP Photo)





In this April 4, 2017 photo, Zoologist Martha Llanes caresses baby chimpanzee Anuma II, left, while Ada hangs on to her leg, at Llanes' apartment in Havana, Cuba. She has forgiven them every transgression. It's hard to stay angry at a baby chimpanzee when it clambers up your leg and into your arms and plants a kiss on your cheek in a plea for forgiveness. (Photo by Ramon Espinosa/AP Photo)





In this April 4, 2017 photo, zoologist Martha Llanes prepares dinner for baby chimpanzees Anuma II, and Ada while the house cat Ty stands on the top of the refrigerator, at Llanes' apartment in Havana, Cuba. Llanes, who has an adult daughter, says it can be difficult to get female chimps to care for their offspring in captivity, and she's been happy to step in. (Photo by Ramon Espinosa/AP Photo)





In this April 4, 2017 photo, zoologist Martha Llanes plays with baby chimpanzee Ada, at her apartment in Havana, Cuba. Ada, the female, is 13 months old, Anuma, the male, 15. Both wear diapers. While zoos in other countries may have specialized facilities for raising baby animals, in Cuba the job falls to Llanes, a 62-year-old zoologist who has cared for 10 baby chimps in her central Havana apartment since she started working at the city zoo in 1983. (Photo by Ramon Espinosa/AP Photo)





In this April 4, 2017 photo, zoologist Martha Llanes feeds Ada, a baby chimpanzee, while baby chimpanzee Anuma II, right, looks on, in Llanes's apartment in Havana, Cuba. Over the last year Ada and Aduma have broken Marta Llanes' television and computer key board, chewed her telephone to pieces and ruined much of her furniture. (Photo by Ramon Espinosa/AP Photo)