How to join multiple objects? I have created a bunny rabbit using a path beveled into a circle shape which I have resized accordingly for each different part of the rabbit. A picture below will show you what I mean.

My question is: How can I join all of these shapes into a single entity so that the object moves as an entire unit when I select any single part of its body?

I have tried to select all the items and use Ctrl+J, but it collapses my rabbit, effectively ruining it. The second picture depicts what happens to my rabbit after I attempt to use Ctrl+J on all its pieces. Mind you, each piece of the rabbit is just a copied sphere of the original, resized and recolored. After Ctrl+J'ing, it seems to revert to the original object shape.

How can I properly join all my rabbit's pieces intact?
The best way to do this is to add a fixed constraint to the object.  Simply click 2 objects then add a constraint.