How big can a baby kangaroo be?

Well a kangaroo is a marsupial so they give brith to their joeys very early in development, gestation periods are only 5 weeks. Here is a picture of a newborn joey he's about the same size as jelly bean. read more

When joeys are born they make an amazing journey by clinging to their mothers fur and in to their pouch which includes nipples so the joey can get nourishment. The joey spend several more weeks in the pouch and insome species the baby doesn't reemerge for ten months not even to potty yuck. read more

A female kangaroo is pregnant for 21 to 38 days, and she can give birth to up to four offspring at one time, though this is unusual. At birth, the baby, called a joey, can be as small as a grain of rice, or as big as a bee, at 0.2 to 0.9 inches (5 to 25 millimeters), according to the San Diego Zoo. read more