The Brief: The phrase "diamond paws" is a riff on "diamond hands." It directs Dogecoin investors to hold onto their investments.

DEEP DIVE
A Dogecoin investor has “diamond paws” if they hold onto their coin through dips in its value, waiting for it to rise again. For investors in meme stocks and cryptocurrencies, the diamond hands means holding onto an investment and “diamond paws” is specific to Dogecoin because dogs have paws.
STOP SELLING YOUR #DOGE. Think of how much money youβll be making versus now when #dogecoin hit $1!! DIAMOND PAWS EVERYONE pic.twitter.com/Ey0uGCNnzX
— lover of doge and shib (@ToSafemoon) April 16, 2021
Diamond paws from dogecoin