Kai's Games: animal sound credits
Real recordings, trimmed, faded and levelled for the games. Used in the 25 games (through the app) and in Living Canvas.

cow.mp3, dog.mp3, frog.mp3
  BigSoundBank (bigsoundbank.com), CC0 1.0 public domain dedication.
  Trimmed clips via the ovos-skill-sound-like project (github.com/andlo/ovos-skill-sound-like).
  Living Canvas also uses BigSoundBank CC0 recordings of a duck, cat, sheep, horse, pig, rooster and owl from the same source.

goat.mp3      "Bleating Goat #1", BigSoundBank, CC0 1.0. https://bigsoundbank.com/bleating-goat-1-s0279.html
hen.mp3       "Annoyed Hen", BigSoundBank, CC0 1.0. https://bigsoundbank.com/annoyed-hen-s0453.html
donkey.mp3    "Donkey, braying #2", BigSoundBank, CC0 1.0. https://bigsoundbank.com/donkey-braying-2-s1550.html
bird.mp3      "Common Blackbird #30", BigSoundBank, CC0 1.0. https://bigsoundbank.com/common-blackbird-30-s3503.html

lion.mp3      "Lion raring-sound1TamilNadu178.ogg" by த*உழவன், Wikimedia Commons, public domain (released by the author).
              https://commons.wikimedia.org/wiki/File:Lion_raring-sound1TamilNadu178.ogg
elephant.mp3  "Elephant voice - trumpeting.ogg" by தகவலுழவன், Wikimedia Commons, CC0 1.0.
              https://commons.wikimedia.org/wiki/File:Elephant_voice_-_trumpeting.ogg

giraffe.mp3   "Giraffe snort.oga" by Anton Baotic, Florian Sicks and Angela S. Stoeger, Wikimedia Commons, CC BY-SA 4.0
              (https://creativecommons.org/licenses/by-sa/4.0/). From Baotic, Sicks & Stoeger (2015), BMC Research Notes 8:425.
              https://commons.wikimedia.org/wiki/File:Giraffe_snort.oga
              giraffe.mp3 is an adaptation (trimmed and levelled) and is itself released under CC BY-SA 4.0.

hippo.mp3     "hippos.mp3" by toadie, Freesound, CC0 1.0. Hippos grunting in the Kafue River, Zambia.
              https://freesound.org/people/toadie/sounds/194870/
rhino.mp3     "Indian rhinoceros (Rhinoceros unicornis)" by Breviceps, Freesound, CC0 1.0.
              https://freesound.org/people/Breviceps/sounds/535810/
zebra.mp3     "Zebras - Grant's Zebra Braying" by TheKingOfGeeks360, Freesound, CC0 1.0.
              https://freesound.org/people/TheKingOfGeeks360/sounds/850661/

The other sounds in the games (music, drums, pops, voices) are made by the games themselves.