Since their discovery, it's been the animals that have received the majority of the study like this black horse from Cullalvera in Spain, or this unusual purple bison from La Pasiega.
Sejak penemuan komunikasi grafis, gambar hewan yang paling banyak diteliti, seperti gambar kuda hitam ini, dari Cullavera di Spanyol. atau bison ungu yang langka ini, dari La Pasiega.