I was helping my cousin with his home-made Korean language flash cards and I noticed he didn’t have a list for animals. This is more for him, but I hope it will benefit you as well.

bear – (곰) gom

elephant – (코끼리) kkoggiri

tiger – (호랑이) horangi

giraffe – (기린) girin

monkey – (원숭이) wonsungi

lion – (사자) saja

whale – (고래) gore

hippo – (하마) hama

horse – (말) mal

pig – (돼지) deji

cow – (소) so

chicken – (닭) dakk

dog – (개) ge

cat – (고양이) goyangi

bug, insect – (벌레) bule

bird – (새) se

fish – (물고기) mulgogi

mouse – (쥐) ji