Photo by Pmontz





Photo by Parnaoz K.





Photo by RonfrenchFoto





Photo by Megan Lorenz





Cincinnati Zoo. Photo by Connie Lemperle





“Thinking Man”. Photo by Joe Mallet





Photo by Emese Gaal





Chimpanzee, Bioparc in Valencia, Spain. Photo by Renate S.





Photo by Ian Lambert





Photo by Billy Knox





Chimpanzee at Everland theme park in South Korea. Photo by In Cherl Kim