PlusL's Alternative Instruction For 31021 Kitty (PlusL' s Instructions for 31021 Book 2) - Kindle edition by PlusL. Crafts, Hobbies & Home Kindle eBooks @ Amazon.com.
MOC!" Quoth the Raven - Alt Build for 31021-1 : r/lego
Amazon.com: LEGO Creator Cat and Mouse 31021 : Toys & Games