According to a new study, chimpanzees, like humans, must contend with a confined bony birth canal when giving birth. In humans, the problem is exacerbated by our unique form of upright walking, since ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: curioustiger/Getty Images Difficult births are not unique to humans, a new analysis of ...

Two chimpanzees have given birth over the last couple of weeks at the Los Angeles Zoo. The mothers and newborn girls are doing well, and visitors can see the baby chimps through viewing times that are ...

3D simulation of the birth canal of chimpanzees with (B) the fetal head in a fully extended position, the typical head alignment in apes, and (C) the fetal head in a fully flexed position, the usual ...