For 10 points—name these great apes with an often- studied sexual drive.
Found only in the lowland rain forests of central Congo, they feed mostly in trees. Prior to 1933, they had been classified as a subspecies of the chimpanzee, but while they resemble that animal both physically and in lifestyle, they are actually a distinct species ranking just behind the chimp in similarity to humans. For 10 points—name these great apes with an often- studied sexual drive.
Found only in the lowland rain forests of central Congo, they feed mostly in trees.
{bonobo}s