Crossword clues for Mammal that lays eggs. 8 letters:ECHIDNASSpiny, egg-laying mammalsPLATYPUS*Egg-laying mammalPLATYPUSEgg-laying mammal of AustraliaECHIDNASEgg-laying mammalsPLATYPUSDuck-billed, egg-laying mammalPLATYPUSMammal that lays eggs.PLATYPIEgg-laying mammalsECHIDNASpiny egg-laying mammal.ECHIDNAEgg-laying mammalMONOTREMEEgg-laying mammalKBILLEDPLATYPUSEgg-laying mammal