Hey Hayd,
You're right, zhu zhu pets is one of the 3 hot niches for 2010 - Link hidden: Login to view
It has been in demand in the forum a few months back and I can see Richelle was able to find one supplier for this product. I hope you won't mind if I'll point you to this past forum post - Link hidden: Login to view
This one is from the SaleHoo directory - Link hidden: Login to view
Let me know if you need me to do further search. :)
Cheers!