![Kenichi Ito of Japan, known as the "world's fastest man on four legs", poses with his new Guinness World Records certificate for the fastest time to run 100 metres on all fours Kenichi Ito of Japan, known as the "world's fastest man on four legs", poses with his new Guinness World Records certificate for the fastest time to run 100 metres on all fours](https://c8.alamy.com/comp/2D02C77/kenichi-ito-of-japan-known-as-the-worlds-fastest-man-on-four-legs-poses-with-his-new-guinness-world-records-certificate-for-the-fastest-time-to-run-100-metres-on-all-fours-in-tokyo-november-14-2013-the-31-year-old-who-developed-his-skills-over-10-years-based-on-the-running-style-of-the-african-patas-monkey-set-a-new-guinness-world-record-on-thursday-clocking-in-1687-seconds-for-a-100-metre-run-and-breaking-his-previous-record-of-1723-seconds-according-to-media-reports-reutersyuya-shino-japan-tags-sport-athletics-society-tpx-images-of-the-day-2D02C77.jpg)
Kenichi Ito of Japan, known as the "world's fastest man on four legs", poses with his new Guinness World Records certificate for the fastest time to run 100 metres on all fours
![Video: Watch Japan's Kinichi Ito scamper to GWR Day success with fastest 100 m running on all fours | Guinness World Records Video: Watch Japan's Kinichi Ito scamper to GWR Day success with fastest 100 m running on all fours | Guinness World Records](https://www.guinnessworldrecords.com/Images/fastest-100-m-on-all-fours_tcm25-405718.jpg)
Video: Watch Japan's Kinichi Ito scamper to GWR Day success with fastest 100 m running on all fours | Guinness World Records
![GWR Day 2014: Katsumi Tamakoshi beats Kenichi Ito to take Fastest 100 m running on all fours record | Guinness World Records GWR Day 2014: Katsumi Tamakoshi beats Kenichi Ito to take Fastest 100 m running on all fours record | Guinness World Records](https://www.guinnessworldrecords.com/Images/Ffastest-100-m-running-on-all-fours-(1)-main_tcm25-329803.jpg)
GWR Day 2014: Katsumi Tamakoshi beats Kenichi Ito to take Fastest 100 m running on all fours record | Guinness World Records
![Guinness World Records: Fastest 100m running on all fours record broken by Tokyo's 'monkey man' | The Independent | The Independent Guinness World Records: Fastest 100m running on all fours record broken by Tokyo's 'monkey man' | The Independent | The Independent](https://static.independent.co.uk/s3fs-public/thumbnails/image/2015/11/12/10/ito-crop.jpg?width=1200)