Researcher Thore Bergman became interested in the gelada's vocalizations after continuously mistaking the primates’ calls for other human voices calling out to him.
We've got a look at the hottest technology gifts this holiday season for everyone from the music lover to the pet fanatic.
No email address was supplied by
To complete your registration on this site, please supply an address.
Please confirm or modify the email address to which you will have subscription offers sent.
For a more personalized experience, please supply the following optional information.