In this photo taken Friday, Feb. 22, 2019 a pangolin recovers from anesthetic at the Johannesburg Wildlife Veterinary Hospital, after undergoing a sonogram to check for pregnancy after being rescued from poachers in a sting operation.

In this photo taken Tuesday, March 12, 2019, leopard tortoises gather in a circle to eat fresh vegetables at the Johannesburg Wildlife Veterinary Hospital.

In this photo taken Wednesday, Feb. 20, 2019, baby primate carer Lauren Beckley, right, and veterinary rehabilitation specialist Nicci Wright, left, work at the Johannesburg Wildlife Veterinary Hospital, in Johannesburg. Beckley plays the part of a surrogate mother to baby primates at the hospital which mainly treats small mammals and raptors that are injured.

In this photo taken Tuesday, Feb, 12, 2019, a pair of young genets are kept in a cage at the Johannesburg Wildlife Veterinary Hospital after being confiscated from where they were being kept as pets.

In this photo taken Thursday Feb. 21, 2019, a highly venomous rinkhals snake is handled for treatment at the Johannesburg Wildlife Veterinary Hospital after it had been doused in diesel fuel and beaten with stick.

In this photo taken Tuesday, Feb. 12, 2019 a karoo thrush waits to be fed at the Johannesburg Wildlife Veterinary Hospital.

In this photo taken Tuesday Feb. 12, 2019, a meerkat peers out from a pipe at feeding time at the Johannesburg Wildlife Veterinary Hospital.

In this photo taken Friday, Feb. 22, 2019, a pangolin undergoes a sonogram performed by veterinary doctor Karin Lourens, left, and veterinary rehabilitation specialist Nicci Wright at the Johannesburg Wildlife Veterinary Hospital after being rescued from poachers in a sting operation.

In this photo taken Tuesday, Feb 12, 2019, a sick southern white-faced owl is kept in a darkened cage at the Johannesburg Wildlife Veterinary Hospital. (Photos: AP)