bluekitty, bluestripe, brownbear, cammo, cammostripes, coala, default,
limekitty, pinky, redbopp, redstripe, saddo, toptri, twinbop, twintri,
warpaint:
Copyright Magnus Auvinen
zlib license

antiantey, beast, chinese_by_whis, dino, evil, evilwolfe, ghostjtj, ghost,
giraffe, greensward, greyfox, hammie-chew, hammie-whis, jeet, kintaro_2,
mermydon-coala, mermydon, mouse, musmann, nanami, oldman, oldschool, PaladiN,
penguin, random, veteran, voodoo_tee, whis:
Copyright Whis
CC-BY license

coala_bluekitty, coala_bluestripe, coala_cammo, coala_cammostripes,
coala_default, coala_limekitty, coala_pinky, coala_redbopp, coala_redstripe,
coala_saddo, coala_toptri, coala_twinbop, coala_twintri, coala_warpaint,
coala_x_ninja:
Copyright DanilBest
CC-BY-SA license

santa_bluekitty, santa_bluestripe, santa_brownbear, santa_cammo, santa_coala,
santa_default, santa_limekitty, santa_pinky, santa_redbopp, santa_redstripe,
santa_saddo, santa_toptri, santa_twinbop, santa_twintri, santa_warpaint:
Copyright forsaken
CC-BY-SA license

bomb, kitty_bluekitty, kitty_bluestripe, kitty_brownbear, kitty_cammo,
kitty_coala, kitty_default, kitty_limekitty, kitty_pinky, kitty_redbopp,
kitty_redstripe, kitty_saddo, kitty_toptri, kitty_twinbop, kitty_twintri,
kitty_warpaint:
Copyright Ravie
CC0 license

kitty_x_ninja:
Copyright patwo.*
CC0 license

demonlimekitty, nanas, nersif:
Copyright Miper
CC-BY-SA license

wartee:
Copyright Obst
zlib license

All other skins:
All content is released under CC-BY-SA 3.0 (https://creativecommons.org/licenses/by-sa/3.0/).