Any idea of what the spawn rate is like?

I noticed some one posted something about the battle pets having a different "breed?"

I was not aware of that.

I assumed that one rare Emerald Proto-Whelp was the same as all the Emerald Proto-Whelps.

Is this not the case? And if not how do you know which one you have?

So should you try and get different levels/quality of pets.

So should you get a common/uncommon and rare rabbit for example?