Your search for "kitty buttons" revealed the following:

Ruby Star Society - Charm Pack - Freaky Familiars

$21.50 CAD

Ruby Star - Cotton - 1 800 Notion - Quilty Dog - Soft Black

$24.00 CAD

Stay Home Club - Vinyl Sticker - Indoor Cat (Satoshi)

$5.25 CAD

Tilly And The Buttons - Ramona Skirt

$31.75 CAD