Yorcat
Yorgy
York
Yosemite
Yosemite Sam
Yoshi
Yosie
You
You Go
You Rotten Feline!
You Too
Young
Young Fella
Young Yeller
Your Cat
Your Highness
Your Hugeness
Your Immensity
Yours
Yours, Mine and Ours
Youser
Yowl
Yowler
Yow-sers
Yoyo
Yo-Yo
Ysidro
Yucca
Yue
Yugo