[Dimensio]

I think the poster responded your question. The distinction made was that a rabbit is alive, but a rock is not.

I suppose then that an important distinction is that a rabbit has specific biochemical processes occuring within its components while a rock does not (while organic material could exist within a rock, the organic material would itself not be a part of the rock).

[Ken H]

What is the distinction between a rabbit and a rock?

"A rabbit floats!"

"Yeah, it floats!"