CC-0:
howling 2 - https://freesound.org/people/PhonosUPF/sounds/499700/
howling 3 - https://freesound.org/people/PhonosUPF/sounds/499701/
howling 4 - https://freesound.org/people/PhonosUPF/sounds/499703/
howling 5 - https://freesound.org/people/PhonosUPF/sounds/499706/
howling 6 - https://freesound.org/people/PhonosUPF/sounds/499704/
howling 7 - https://freesound.org/people/PhonosUPF/sounds/499705/
howling 8 - https://freesound.org/people/PhonosUPF/sounds/499702/
cave monsters - https://freesound.org/people/Trebblofang/sounds/176930/
dark cave factory atmo - https://freesound.org/people/szegvari/sounds/583474/
bird noise - https://freesound.org/people/SpaceJoe/sounds/507257/
solitary bird song - https://freesound.org/people/nuncaconoci/sounds/623862/
pig grunting and grumbling - https://freesound.org/people/felix.blume/sounds/158746/
whalesong - https://freesound.org/people/taure/sounds/361423/
200614 fies, close buzzing, periodic, wide stereo 7am - https://freesound.org/people/TRP/sounds/567732/
howler_monkey_jungle_4 - https://freesound.org/people/itsmrjack/sounds/123044/
TRIBAL TOY BONGOS-89 - https://freesound.org/people/TA-AT/sounds/449811/
shamanic drum 1 - https://freesound.org/people/adharca/sounds/275376/
shamanic drum 2 - https://freesound.org/people/adharca/sounds/275377/
cave tribal song - https://freesound.org/people/szegvari/sounds/517317/
ghostly whispers - https://freesound.org/people/dimbark1/sounds/316797/
whisper trail 1 - https://freesound.org/people/Black%20Boe/sounds/22328/
whisper trail 2 - https://freesound.org/people/Black%20Boe/sounds/22329/
whisper trail 3 - https://freesound.org/people/Black%20Boe/sounds/22330/
frogs - https://freesound.org/people/derjuli/sounds/535066/
frog croaking (uk common frog) - https://freesound.org/people/shaunhillyard/sounds/532235/
glitched birds - https://freesound.org/people/soramoosic/sounds/256153/
bird song 03 - https://freesound.org/people/olliehahn12/sounds/474493/
pajaro_palenque - https://freesound.org/people/nicotep/sounds/619305/


CC-BY-A
exotic creature song - https://freesound.org/people/InspectorJ/sounds/469312/
crow slow - https://freesound.org/people/InspectorJ/sounds/418262/
long bird song slow - https://freesound.org/people/IESP/sounds/339907/
bird budgie song - https://freesound.org/people/danielfergusonmusic/sounds/404957/
horse neigh - https://freesound.org/people/dobroide/sounds/18229/
horse whinny - https://freesound.org/people/GoodListener/sounds/322445/
horse nicker - https://freesound.org/people/GoodListener/sounds/322449/
moan - https://freesound.org/people/GoodListener/sounds/322444/
horse snort 2 - https://freesound.org/people/GoodListener/sounds/322454/
braying donkey - ane brayant - https://freesound.org/people/beskhu/sounds/186704/
whale - https://freesound.org/people/Tritus/sounds/186899/
treBccc1 - https://freesound.org/people/tomerbe/sounds/546110/
Tribal memories - https://freesound.org/people/InSintesi/sounds/370353/
Celtic_Drum - https://freesound.org/people/13NHarri/sounds/263974/
whisper5 - thanvannispen
creepywhisper_ambient - https://freesound.org/people/ohnobones/sounds/412769/
bangkok frog - https://freesound.org/people/WIM/sounds/9099/
black casqued hornbill 5-https://freesound.org/people/ERH/sounds/56549/
exotic birds sound - https://freesound.org/people/bolkmar/sounds/423804/
avalanche - https://freesound.org/people/mystiscool/sounds/7141/