Which mammal has the largest change in size from birth to fully grown percentage wise?

  • 8
    $\begingroup$ I guess it maybe a marsupial for example red kangaroo. $\endgroup$
    – JM97
    Dec 15, 2016 at 12:07
  • 1
    $\begingroup$ If the answer below addressed your problem, please consider accepting it by clicking on the check mark/tick to the left of the answer, turning it green. This marks the question as resolved to your satisfaction, and awards reputation both to you and the person who answered. If you have >= 15 reputation points, you may also upvote the answer if you wish. There is no obligation to do either. $\endgroup$
    – MattDMo
    Dec 18, 2016 at 17:56

1 Answer 1


@JM97 is correct.

According to National Geographic >>

The gestation period of a Red Kangaroo is 33 days and it's baby at birth weighs a mere 0.03 oz. To put it into a more precise perspective, on birth, the baby weighs 1/100,000 of an adult red kangaroo's weight.

Second place goes to the baby of a Giant Panda; at birth it weighs 3.2oz which is 1/900 of an adult giant panda's weight.


You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .