There are two types of animals, but three species of monotremes. They are the platypus, the short-beaked echidna and the long-beaked echidna.
Monotremes, marsupials, and placentals
Most mammals are placental...marsupial mammals and monotremes are not placental.
The platypus and the echidna are the only living examples of monotremes, or egg-laying mammals.
All mammals except for monotremes are viviparous. Monotremes are platypuses and echidnas: therefore, any mammal that is not a platypus or echidna is viviparous. Actual examples would be cats, dogs, horses, kangaroos, koalas, gerbils, gophers, beavers, dolphins, whales, rats, shrews, porcupines, armadillos, etc.
Yes, monotremes are real.
No a Blue Whale is Not a monotremes.
Monotremes never eat their young.
No. The koala is an example of a marsupial. The only two examples of monotremes, or egg-laying mammals, are the platypus and te echidna.
Monotremes are egg laying mammals, the platypus and the echidna are the only two monotremes.
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.