The kangaroo is a kind when have bag of mammal, wallaby is in maternal abdomen be pregnant with come out 33 days with respect to can rapid move, the wallaby when be born can differentiate even tail and hind leg not quite come out. The wallaby whole body that just was born is aglow and aglow, weight does not cross 4 grams like pignut. Rely on the forelimb with the strongest growth, lick the hair that pass down kangaroo mom, faltering climb brood pouch. This wallaby still has needed 25 weeks of ability to be able to give the world outside now in. Look from this piece of graph however, it looks more like an extraterrestrial darling, is not tellurian life. Wallaby is in after entering brood pouch, can use a word for, that is " about is changing, dry thing is changeless " -- because of its mainest task, suck the breast namely chief body. The weight of young cub and mother compares panda near 1:1000, and the weight comparing between kangaroo darling and kangaroo mom can achieve 1:5 however000. Maintain the temperature that 35 ℃ control all the year round, general wallaby waits for 8 months to control ability to agree to come out in mom's pouch, blossom true kangaroo.