QUESTION: WHAT COMES AFTER LIFE?

It depends upon our Deeds (Karma).

1.) If we burn ALL of our deeds (whether positive or negative), Salvation (Moksha) will be achieved. But if SOME of our deeds (say 5%) are remaining (to burn), and if we are near to the death bed, God will allow us to take next birth as human again, so as to burn the remaining deeds which enable us to achieve Salvation (Moksha). 

2.) Else, if the deeds are not burned or suffered, we will have to take birth in form of animal, birds etc., which is called as BHOG YONI (means only to suffer).

TYPE OF YONIS- DIVYA YONI, BHOG YONI & KARMA YONI

Human Beings- Only comes under Karma Yoni (who can burn their deeds by worshiping god, chanting the name of god, meditation etc.)

All other Animals, Birds etc.- Comes under Bhog Yoni (who can not perform Karma, they are born only to suffer as per their deeds performed in their past birth)

"Only Human beings are able to perform Work (Karma)"

What is the importance of Karma Yoni?

Refer:- Importance of Karma Yoni (Human Life)