![Malcolm S. Ramsay on X: "Geladas are known for their unique ability to flip their upper lip, exposing their impressive teeth, which can be either a dominant or submissive gesture depending on Malcolm S. Ramsay on X: "Geladas are known for their unique ability to flip their upper lip, exposing their impressive teeth, which can be either a dominant or submissive gesture depending on](https://pbs.twimg.com/media/EEmJ5fQXYAMqPyJ.jpg)
Malcolm S. Ramsay on X: "Geladas are known for their unique ability to flip their upper lip, exposing their impressive teeth, which can be either a dominant or submissive gesture depending on
![This photo sequence shows the progression of a threat display by an adult male gelada baboon. In an attempt to intimidate others, … | Weird animals, Baboon, Animals This photo sequence shows the progression of a threat display by an adult male gelada baboon. In an attempt to intimidate others, … | Weird animals, Baboon, Animals](https://i.pinimg.com/736x/65/2a/9a/652a9a071a166ee5bd8f8c41fc8c971e.jpg)
This photo sequence shows the progression of a threat display by an adult male gelada baboon. In an attempt to intimidate others, … | Weird animals, Baboon, Animals
![Display maschio. Babbuino Gelada, scimmia del Vecchio Mondo, Theropithecus gelada sanguinamento aka-cuore monkey.Simiens Parco Nazionale,l'Etiopia Foto stock - Alamy Display maschio. Babbuino Gelada, scimmia del Vecchio Mondo, Theropithecus gelada sanguinamento aka-cuore monkey.Simiens Parco Nazionale,l'Etiopia Foto stock - Alamy](https://c8.alamy.com/compit/ppb23m/display-maschio-babbuino-gelada-scimmia-del-vecchio-mondo-theropithecus-gelada-sanguinamento-aka-cuore-monkey-simiens-parco-nazionale-l-etiopia-ppb23m.jpg)
Display maschio. Babbuino Gelada, scimmia del Vecchio Mondo, Theropithecus gelada sanguinamento aka-cuore monkey.Simiens Parco Nazionale,l'Etiopia Foto stock - Alamy
![Gelada Face As It Lip Flips At Passing Male Then Walks Out Of Shot Available In Hd High-Res Stock Video Footage - Getty Images Gelada Face As It Lip Flips At Passing Male Then Walks Out Of Shot Available In Hd High-Res Stock Video Footage - Getty Images](https://media.gettyimages.com/id/1B05370_0214/video/gelada-face-as-it-lip-flips-at-passing-male-then-walks-out-of-shot-available-in-hd.jpg?s=256x256&k=20&c=nNBRZf1BpL-DkTgiMyiEmTOK9ljj7lSQLJM2gJV12oM=)
Gelada Face As It Lip Flips At Passing Male Then Walks Out Of Shot Available In Hd High-Res Stock Video Footage - Getty Images
San Diego Zoo | You've heard of flipping the bird; how about flipping the lip? When threatened, a gelada displays aggression through the "lip flip," an... | Instagram
![Il restauro del maschio di gelada con la ricostruzione di parte del... | Download Scientific Diagram Il restauro del maschio di gelada con la ricostruzione di parte del... | Download Scientific Diagram](https://www.researchgate.net/profile/Giorgio-Chiozzi/publication/269076133/figure/fig2/AS:671511463591961@1537112217598/Il-restauro-del-maschio-di-gelada-con-la-ricostruzione-di-parte-del-muso-per-illustrare_Q320.jpg)
Il restauro del maschio di gelada con la ricostruzione di parte del... | Download Scientific Diagram
![Female gelada (Theropithecus gelada) showing her uncertainty by a 'lip flip'.. Simien Mountains National Park, Ethiopia. Nov 2008. Female gelada (Theropithecus gelada) showing her uncertainty by a 'lip flip'.. Simien Mountains National Park, Ethiopia. Nov 2008.](http://www.shahrogersphotography.com/gallery/FeaturesStories/Gelada/SM08Art-17.jpg)
Female gelada (Theropithecus gelada) showing her uncertainty by a 'lip flip'.. Simien Mountains National Park, Ethiopia. Nov 2008.
![Gelada Baboon - male showing gums, lip-flip - an expression of fear (Theropithecus gelada), Stock Photo, Picture And Rights Managed Image. Pic. MEV-10777425 | agefotostock Gelada Baboon - male showing gums, lip-flip - an expression of fear (Theropithecus gelada), Stock Photo, Picture And Rights Managed Image. Pic. MEV-10777425 | agefotostock](https://previews.agefotostock.com/previewimage/medibigoff/3f248f204d75ab094f73a4fa990f3b51/mev-10777425.jpg)
Gelada Baboon - male showing gums, lip-flip - an expression of fear (Theropithecus gelada), Stock Photo, Picture And Rights Managed Image. Pic. MEV-10777425 | agefotostock
![Gelada (Theropithecus gelada) adult male, in 'lip-flip' display, Simien Mountains, Ethiopia - SuperStock Gelada (Theropithecus gelada) adult male, in 'lip-flip' display, Simien Mountains, Ethiopia - SuperStock](https://www.superstock.com/cdn/4421/Comp/4421-15172.webp)
Gelada (Theropithecus gelada) adult male, in 'lip-flip' display, Simien Mountains, Ethiopia - SuperStock
![Gelada Theropithecus gelada adult male 'lip-flip' threatening display afro-alpine heathland habitat Simien Mountains Ethiopia Stock Photo - Alamy Gelada Theropithecus gelada adult male 'lip-flip' threatening display afro-alpine heathland habitat Simien Mountains Ethiopia Stock Photo - Alamy](https://c8.alamy.com/comp/CNK945/gelada-theropithecus-gelada-adult-male-lip-flip-threatening-display-CNK945.jpg)
Gelada Theropithecus gelada adult male 'lip-flip' threatening display afro-alpine heathland habitat Simien Mountains Ethiopia Stock Photo - Alamy
![Young male gelada (Theropithecus gelada) signalling aggression with 'lip flips' _ portrait. Simien Mountains National Park, Ethiopia. Nov 2008. Young male gelada (Theropithecus gelada) signalling aggression with 'lip flips' _ portrait. Simien Mountains National Park, Ethiopia. Nov 2008.](http://www.shahrogersphotography.com/gallery/FeaturesStories/Gelada/SM08Art-33.jpg)
Young male gelada (Theropithecus gelada) signalling aggression with 'lip flips' _ portrait. Simien Mountains National Park, Ethiopia. Nov 2008.
![Artist Bibi #no.1 magnamalo hater on X: "Gelada's have one of if not the coolest threat display of any extant animal. they look so alien when they do the lip flip. https://t.co/St6hNYHN9r" / Artist Bibi #no.1 magnamalo hater on X: "Gelada's have one of if not the coolest threat display of any extant animal. they look so alien when they do the lip flip. https://t.co/St6hNYHN9r" /](https://pbs.twimg.com/media/F6cLMFdWcAATlw4.jpg)