Why is making fun of Mohamed taboo, but not Jesus?

You can make fun of whatever you want.

Religion is a legacy of lunacy. Stare it hard in the face.

The path to atheism is always traumatic for staunch religionists. Yet many atheists, like me, have a strong former religious background.

When Muslims' delusions are shattered, academically, one by one, Islam will be as impotent as Christianity.

Christianity was the same 500 years ago. Muslim faith is 500 years younger than Christianity - it is still having growing pangs, like an unruly teenager, as did Christianity and Judaism. Unfortunately, in a time when people have extreme weapons.

Muslims love Prophet Muhammad saas more than their ownself.This speaks volumes about greatness of Prophet.And Yes making fun of him is punishment by death.Alhamdulillah.Freedom to speak doesnot mean one can ridicule anyone you dont like because of your ignorance.Truth and righteousness cannot be allowed to be ridiculed by stupids.

What I don't get is, how do they know the cartoon is of Mohamud if there aren't any pictures of him?

New kid on the block, relatively speaking. Give it time.

the reason the image is forbidden is to prevent what happened to jesus, deification.