The following sounds were used from freesound:

cat_meow.ogg: modified from "Meow 4.wav" by freesound user "TRNGLE" (https://freesound.org/people/TRNGLE/sounds/368006/) licensed under CCBY 3.0. The original audio was trimmed, split to mono, and converted from WAV to OGG format.

cat_hiss.ogg: modified from "catHisses1.wav" by freesound user "Zabuhailo" (https://freesound.org/people/Zabuhailo/sounds/146963/) licensed under CC0 1.0 (public domain). The original audio was trimmed and converted from WAV to OGG format.

small_dog_bark_happy.ogg: modified from "Dog bark2.wav" by freesound user "MisterTood" (https://freesound.org/people/MisterTood/sounds/9032/) licensed under CC0 1.0 (public domain). The original audio was trimmed and converted from WAV to OGG format.

duck_quack_happy.ogg: modified from "Duck Quack - Sound Effect (HD).mp3" by freesound user "Tabby+Gus." (https://freesound.org/people/Tabby+Gus./sounds/515408/) licensed under CC0 1.0 (public domain). The original audio was trimmed, looped, split to mono, and converted from MP3 to OGG format.

chicken_cluck_happy.ogg: modified from "Chicken Single Alarm Call" by freesound user "Rudmer_Rotteveel" (https://freesound.org/people/Rudmer_Rotteveel/sounds/316920/) licensed under CC0 1.0 (public domain). The original audio was trimmed and converted from WAV to OGG format.

ferret_happy.ogg: modified from "Ferret" by freesound user "J.Zazvurek" (https://freesound.org/people/J.Zazvurek/sounds/155115/) licensed under CC BY 3.0. The original audio was trimmed and converted from WAV to OGG format.

mouse_squeak.ogg: modified from "Cartoon - Bat / Mouse Squeak" by freesound user "Breviceps" (https://freesound.org/people/Breviceps/sounds/445958/) licensed under CC0 1.0 (public domain). The original audio was converted from WAV to OGG format.

sloth_squeak.ogg: modified from "squeakfinal.wav" by freesound user "Higgs01" (https://freesound.org/people/Higgs01/sounds/428114/) licensed under CC0 1.0 (Public domain dedication). The original audio was converted from WAV to OFF format AND converted from stereo to mono.

parrot_raught.ogg: modified and used from "Parrot 1 raught 2.wav" by freesound user "Coral_Island_Studios" (https://freesound.org/people/Coral_Island_Studios/sounds/432588/) licensed under CC BY 3.0. The original audio was converted from WAV to OGG format.

fox_squeak.ogg: modified from "Video Game Squeak" by freesound user "Breviceps" (https://freesound.org/people/Breviceps/sounds/468442/) licensed under CC0 1.0. The original audio was converted from WAV to OGG format

frog_ribbit.ogg: original audio created by freesound user "egomassive" (https://freesound.org/people/egomassive/sounds/536759/). licensed under licensed under CC0 1.0

goose_honk.ogg: modified from " Bird Honk - 1"  by freesound user "SpaceJoe" (https://freesound.org/people/SpaceJoe/sounds/510940/) licensed under CC0 1.0.  The originial audio was converted from WAV to OGG format.

snake_hiss.ogg: modified from "hissing snake sound effect" by freesound user "Garuda1982" (https://freesound.org/people/Garuda1982/sounds/541656/) licensed under CC BY 4.0. The original audio was convertred from WAV to OGG format.

The following sounds were used from youtube:

penguin_squawk.ogg: audio is recorded/created by youtube user "ProSounds" (https://youtu.be/Anr35RbBL3Y) licensed under CC BY 3.0. The original audio was trimmed and converted from MP3 to OGG format.

raccoon_squeak.ogg: audio is recorded by youtube user "jnargus" (https://youtu.be/BGjFP1CP7E0) licensed under CC by 3.0

goat_bah.ogg: audio is created by youtube user "Winry Marini" (https://youtu.be/QIhwzsk5bww) licensed under CC BY 3.0

lizard_happy.ogg: audio created by youtube user "Nagaty Studio" (https://youtu.be/I7CX0AS8RNI) licensed under CC by 3.0.

