[Old Teufel Hunden]

"Jupiter, the biggest planet in the solar system, might have gained its dominant position after swallowing up a smaller planet, scientists believe."

And do planets burp after eating?

[Steve Van Doorn]

"And do planets burp after eating? "

I know you meant this as a joke but there is evidence gases rise to the surface after a long period of time and after a large impact like this.
http://en.wikipedia.org/wiki/Large_igneous_province

The earth seen a number of events we call them mass extinction.
The greatest extinction in world history coincide with what seems to be a belching of the earth.
the great extinction of 250 million years ago is very likely one of those ‘burps’