Loango, a crown male Mangabey monkey, checks out the photographer at the Jardin des Plantes zoo in Paris on April 18. The baby was rejected by his mother when he was born in the zoo on March 5. This birth is part of the European Breeding of Endangered Species Program.
A pair of Mexican gray wolves are seen at Brookfield Zoo’s Great Bear Wilderness exhibit in Brookfield, Illinois on April 18. Through a study of Mexican gray wolves, researchers hope to aid in conservation efforts of the endangered species.