![Close up to face of dominant male, Bornean orangutan (Pongo pygmaeus) with the signature developed cheek pads that arise in response to a testosterone Stock Photo - Alamy Close up to face of dominant male, Bornean orangutan (Pongo pygmaeus) with the signature developed cheek pads that arise in response to a testosterone Stock Photo - Alamy](https://c8.alamy.com/comp/PH16TK/close-up-to-face-of-dominant-male-bornean-orangutan-pongo-pygmaeus-with-the-signature-developed-cheek-pads-that-arise-in-response-to-a-testosterone-PH16TK.jpg)
Close up to face of dominant male, Bornean orangutan (Pongo pygmaeus) with the signature developed cheek pads that arise in response to a testosterone Stock Photo - Alamy
![Close Up To Face of Dominant Male, Bornean Orangutan (Pongo Pygmaeus) with the Signature Developed Cheek Pads that Arise in Stock Image - Image of hair, jungle: 97564903 Close Up To Face of Dominant Male, Bornean Orangutan (Pongo Pygmaeus) with the Signature Developed Cheek Pads that Arise in Stock Image - Image of hair, jungle: 97564903](https://thumbs.dreamstime.com/z/close-up-to-face-dominant-male-bornean-orangutan-pongo-pygm-pygmaeus-signature-developed-cheek-pads-arise-97564903.jpg)
Close Up To Face of Dominant Male, Bornean Orangutan (Pongo Pygmaeus) with the Signature Developed Cheek Pads that Arise in Stock Image - Image of hair, jungle: 97564903
![Close Up To Face Of Dominant Male, Bornean Orangutan (Pongo Pygmaeus) With The Signature Developed Cheek Pads That Arise In Response To A Testosterone Surge. Stock Photo, Picture And Royalty Free Image. Close Up To Face Of Dominant Male, Bornean Orangutan (Pongo Pygmaeus) With The Signature Developed Cheek Pads That Arise In Response To A Testosterone Surge. Stock Photo, Picture And Royalty Free Image.](https://previews.123rf.com/images/kampwit/kampwit1708/kampwit170803845/84483428-close-up-to-face-of-dominant-male-bornean-orangutan-pongo-pygmaeus-with-the-signature-developed-chee.jpg)
Close Up To Face Of Dominant Male, Bornean Orangutan (Pongo Pygmaeus) With The Signature Developed Cheek Pads That Arise In Response To A Testosterone Surge. Stock Photo, Picture And Royalty Free Image.
![ٹوئٹر \ Dublin Zoo Twitter پر۔ "Did you know that male orangutan's big cheek pads are known as 'flanges'? They can take up to 20 years to form and it is thought ٹوئٹر \ Dublin Zoo Twitter پر۔ "Did you know that male orangutan's big cheek pads are known as 'flanges'? They can take up to 20 years to form and it is thought](https://pbs.twimg.com/media/DfKKlovXcAAbO48.jpg:large)
ٹوئٹر \ Dublin Zoo Twitter پر۔ "Did you know that male orangutan's big cheek pads are known as 'flanges'? They can take up to 20 years to form and it is thought
Orangutan Foundation International - Mature male orangutans have flappy cheek-pads known as "flanges" that can take up to 20 years to grow! Unusual as they may look, studies have shown that in
![Close up to face of dominant male, Bornean orangutan (Pongo pygmaeus) with the signature developed cheek pads that arise in response to a testosterone Stock Photo - Alamy Close up to face of dominant male, Bornean orangutan (Pongo pygmaeus) with the signature developed cheek pads that arise in response to a testosterone Stock Photo - Alamy](https://c8.alamy.com/comp/PH16PK/close-up-to-face-of-dominant-male-bornean-orangutan-pongo-pygmaeus-with-the-signature-developed-cheek-pads-that-arise-in-response-to-a-testosterone-PH16PK.jpg)
Close up to face of dominant male, Bornean orangutan (Pongo pygmaeus) with the signature developed cheek pads that arise in response to a testosterone Stock Photo - Alamy
![Close Up To Face Of Dominant Male, Bornean Orangutan (pongo Pygmaeus) With The Signature Developed Cheek Pads That Arise In Response To A Testosterone Surge. Stock Photo, Picture And Royalty Free Image. Close Up To Face Of Dominant Male, Bornean Orangutan (pongo Pygmaeus) With The Signature Developed Cheek Pads That Arise In Response To A Testosterone Surge. Stock Photo, Picture And Royalty Free Image.](https://previews.123rf.com/images/kampwit/kampwit1708/kampwit170803822/83422132-close-up-to-face-of-dominant-male-bornean-orangutan-pongo-pygmaeus-with-the-signature-developed-chee.jpg)
Close Up To Face Of Dominant Male, Bornean Orangutan (pongo Pygmaeus) With The Signature Developed Cheek Pads That Arise In Response To A Testosterone Surge. Stock Photo, Picture And Royalty Free Image.
![orangutan pic daily & facts!! on Instagram: “Day 52! Males have large cheek pads called flanges - these flanges usually d… | Orangutan, Animals wild, Baby orangutan orangutan pic daily & facts!! on Instagram: “Day 52! Males have large cheek pads called flanges - these flanges usually d… | Orangutan, Animals wild, Baby orangutan](https://i.pinimg.com/736x/07/43/81/074381f3e6c489f688e833dd2b1b4f49.jpg)