Except for the five species of monotremes (egg-laying mammals), all modern mammals give birth to live young. Most mammals, including the six most species-rich orders, belong to the placental group. The three largest orders in numbers, are first Rodentia: mice, rats, porcupines, beavers, capybaras, and other gnawing mammals; then Chiroptera: bats; and then Soricomorpha: shrews, moles and solenodons. The next three orders, depending on the biological classification scheme used, are the Primates including the humans; the Cetartiodactyla including the whales and the even-toed hoofed mammals; and the Carnivora, that is, cats, dogs, weasels, bears, seals, and their relatives. COUNT 4
QSN1 How many species of mammals do not have a live birth? ANS1 five species QSN2 Which group consist of the most mammals? ANS2 Rodentia QSN3 Which group do humans belong too? ANS3 Primates QSN4 Which group do cats and dogs belong too? ANS4 Carnivora