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 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.
![Dominant male orangutan with the signature cheek pads that develope in response to a testosterone surge. | CanStock Dominant male orangutan with the signature cheek pads that develope in response to a testosterone surge. | CanStock](https://cdn.w600.comps.canstockphoto.com/dominant-male-orangutan-with-the-si-stock-image_csp32467564.jpg)
Dominant male orangutan with the signature cheek pads that develope in response to a testosterone surge. | CanStock
![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/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 Foundation International - Mature male orangutans have large flappy cheek-pads, known as "flanges". Not all males have them, and this trait of dominance can take up to 20 years to grow!
![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)
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 Foundation on Twitter: "A wild male #orangutan. Is there a more impressive sight in nature? 🦧 The distinctive cheek pads known as 'flanges' can only be found on male orangutans. It's Orangutan Foundation on Twitter: "A wild male #orangutan. Is there a more impressive sight in nature? 🦧 The distinctive cheek pads known as 'flanges' can only be found on male orangutans. It's](https://pbs.twimg.com/media/FMCE56XXIAE2BKr.png)
Orangutan Foundation on Twitter: "A wild male #orangutan. Is there a more impressive sight in nature? 🦧 The distinctive cheek pads known as 'flanges' can only be found on male orangutans. It's
![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/PH16P2/close-up-to-face-of-dominant-male-bornean-orangutan-pongo-pygmaeus-with-the-signature-developed-cheek-pads-that-arise-in-response-to-a-testosterone-PH16P2.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 cute, animal: 97564427 Close Up To Face of Dominant Male, Bornean Orangutan (Pongo Pygmaeus) with the Signature Developed Cheek Pads that Arise in Stock Image - Image of cute, animal: 97564427](https://thumbs.dreamstime.com/z/close-up-to-face-dominant-male-bornean-orangutan-pongo-pygm-pygmaeus-signature-developed-cheek-pads-arise-97564427.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 cute, animal: 97564427
![This here is a so-called 'unflanged' orangutan male. Flanges is another name for the large cheek pads that you see in orangutan males. However, not all males de… This here is a so-called 'unflanged' orangutan male. Flanges is another name for the large cheek pads that you see in orangutan males. However, not all males de…](https://i.pinimg.com/originals/c1/ed/e2/c1ede27b1a6f103cb834e6c1c518da1d.jpg)