Did you know that newborn kangaroo can fit in the teaspoon? Yes, it’s small enough for that!
The small joey is born at a very early stage of development (after 31-36 days). If you compare to the embryo, it would be about 7-8 weeks. It weights about 0.03 ounce. The joey usually stays in pouch for about 9 months before it leaves the pouch for the first time.