O episódio S02E10 nos mostrou que os White Walkers podem montar cavalos mortos-vivos. Mas no contexto do programa, parece ser a única espécie não humana a ser ressuscitada dos mortos.
Nos livros, além disso, temos alguns contos
"Some stories speak of them riding the corpses of dead animals. Bears, direwolves, mammoths, horses, it makes no matter, so long as the beast is dead. The one that killed Small Paul was riding a dead horse, so that part’s plainly true. Some accounts speak of giant ice spiders too."
A Dance with Dragons - chapter 7 (Jon II)
um urso morto-vivo
A snow bear crashed through the brush, huge and skeletal, half its head sloughed away to reveal the skull beneath. Summer and his pack fell upon it and tore it into pieces. Afterward they gorged, though the meat was rotted and half-frozen, and moved even as they ate it.
A Dance with Dragons - chapter 34 (Bran II)
e uma mensagem do Hardhome
"Dead things in the woods. [...]. Dead things in the water."
A Dance with Dragons - chapter 58 (Jon XII)