Dogecoin (CRYPTO: DOGE) is down 4% while Shiba Inu (CRYPTO: SHIB) dropped 10% over seven days as meme coins struggle — with PENGU (CRYPTO: PENGU) the only exception. DOGE And SHIB Bleeding Dogecoin is down 87% from its $0.74 all-time high reached May 8, 2021.