- Yabber (Australian; Talk, Jabber)

- Yacca (Tree)

- Yak (Animal)

- Yeast (Fungus)

- Yonder (“Over there”; maybe used for absent-minded cats?)

- Yawn

- Yap (“A sharp, shrill bark”)

- Yowl

- Yolk (Egg guts)

- Yabby (Blue lobster <3)

- Zucchini (Food)

- Zorila (Animal; Not a typo)

- Zebra (Depending on location)

- Zest (“Great enthusiasm or energy”)

- Zeal (“Great enthusiasm or energy in pursuit of an object or cause”)

- Zip (“Move at high speed”)

- Zing (Enthusiasm, energy)

- Zibet (Animal)