- walrus
- warthog
- waterbuck, defassa
- whale, beluga
- whale, blue
- whale, false killer
- whale, gray
- whale, killer
- whale, short-finned pilot
- whale, sperm
- whales
- whales, endangered
- wigeon, American
- wigeon, Chiloe
- wildebeest, Eastern white-bearded (gnu)
- wolf, gray
- wolf, maned
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