I think so.
Yes, monotremes are real.
No a Blue Whale is Not a monotremes.
Monotremes never eat their young.
Monotremes are egg laying mammals, the platypus and the echidna are the only two monotremes.
Cats usually keep their claws healthy by "sharpening" them regularly, using scratching posts. A cat's nails are nothing like human nails; a cat's claws are made of many thin layers, much like an onion. To shed these old layers, a cat will dig in its claws into a surface and flex its toes to remove the outer layer. The remaining layer is smooth and keeps the claws very sharp.
Monotremes are mammals; therefore they have lungs, not gills.
Eutherians and monotremes are in the phylum Chordata.
No, monotremes do not have short internal development.
Monotremes are unique for being egg laying mammals.
No. Monotremes are an unusual group of mammals which lay eggs.
Monotremes are mammals that lay eggs, such as the Echidna and the Platypus.
No: dolphins are placental mammals. The only monotremes are platypuses and echidnas.