Lion, elephant, horse and camel recordings: Wildfire Games, from 0 A.D.. Licensed under CC BY-SA 3.0. The included MP3 adaptations were trimmed, volume-balanced and faded, and remain under the same license. Original filenames: lion_select1.ogg, elephant_order1.ogg, horse_select1.ogg and camel_10.ogg. Original license.
Tiger: G12-45-Tiger Hiss and Growl.wav, craigsmith, CC0. Adapted from the publicly available preview recording with trimming and volume balancing.
Wolf: Wolf howls, U.S. Fish and Wildlife Service, public domain. Trimmed, volume-balanced and faded.
Footsteps are synthesized in the game. Animal calls are recordings, not spoken imitations.