An ostrich, the fastest extant biped[1] at 70 km/h[2][lower-alpha 1]

Bipedalism is a form o terrestrial locomotion whaur an organism muives bi means o its twa rear limbs or legs.


  1. The reid kangaroo can atteen a seemilar speed for short distances.[3]


  1. Stewart, D. (2006-08-01). "A Bird Like No Other". National Wildlife. National Wildlife Federation. Archived frae the oreeginal on 2012-02-09. Retrieved 2014-05-30.
  2. Davies, S.J.J.F. (2003). "Birds I Tinamous and Ratites to Hoatzins". In Hutchins, Michael (ed.). Grzimek's Animal Life Encyclopedia. 8 (2 ed.). Farmington Hills, MI: Gale Group. pp. 99–101. ISBN 0-7876-5784-0.
  3. Penny, M. (2002). The Secret World of Kangaroos. Austin TX: Raintree Steck-Vaughn. p. 22. ISBN 0-7398-4986-7.