![Early humans may have first walked upright in the trees | UCL News - UCL – University College London Early humans may have first walked upright in the trees | UCL News - UCL – University College London](https://www.ucl.ac.uk/news/sites/news/files/chimps_uclnews_800x500_teaser.png)
Early humans may have first walked upright in the trees | UCL News - UCL – University College London
![What Chimps Could Tell Us About How Humans Started Walking on Two Legs | Science| Smithsonian Magazine What Chimps Could Tell Us About How Humans Started Walking on Two Legs | Science| Smithsonian Magazine](https://th-thumbnailer.cdn-si-edu.com/Q0hVTyX-cUkmpRWXMy6a_7S5e6Y=/800x600/https://tf-cmsv2-smithsonianmag-media.s3.amazonaws.com/filer/20120326111022chimpanzees-youth-riding.jpg)
What Chimps Could Tell Us About How Humans Started Walking on Two Legs | Science| Smithsonian Magazine
Golden & Glitter - Chimp Photo of the Week! Jorly walking upright at Tchimpounga Chimpanzee Rehabilitation Center | Facebook
![530+ Chimpanzee Walking Stock Photos, Pictures & Royalty-Free Images - iStock | Chimpanzee walking upright 530+ Chimpanzee Walking Stock Photos, Pictures & Royalty-Free Images - iStock | Chimpanzee walking upright](https://media.istockphoto.com/id/482015272/photo/chimpanzee-walking.jpg?s=612x612&w=0&k=20&c=pjSDKOM4Xi_PmQv6fuPM0HLF9HPTN1GYkBM-o4X8vrM=)
530+ Chimpanzee Walking Stock Photos, Pictures & Royalty-Free Images - iStock | Chimpanzee walking upright
![530+ Chimpanzee Walking Stock Photos, Pictures & Royalty-Free Images - iStock | Chimpanzee walking upright 530+ Chimpanzee Walking Stock Photos, Pictures & Royalty-Free Images - iStock | Chimpanzee walking upright](https://media.istockphoto.com/id/147676532/photo/chimpanzee-walking.jpg?s=612x612&w=0&k=20&c=dIKAnDucsprlY1SQF_5nNYxvE_uR4jEYi6hph1frIFM=)