What is a Petpetpet?
Petpetpets are very small creatures whose existence, up until very recently, was unknown. Many of them resemble bugs and insects. We do not really know what they do or where they come from, but they seem to like hopping onto Petpets.

How do I get a Petpetpet?
Petpetpets are usually found by your Petpet. Very rarely, Petpets are able to catch one of these elusive little bugs in their mouth, and happily bring them back to their owners. While most Petpet owners make an awful face, stick the offensive insect in a jar, then try to sell it in their shop, others think that the little bugs are adorable.

How do I get a Petpetpet on my Petpet?
If you simply leave the little bug in your inventory, it will eventually get bored and hop on to your active Neopet's Petpet. That's assuming, of course, that your active Neopet has a Petpet.

Another way is:
1. Buy or otherwise obtain a Petpetpet.
2. Put your Petpetpet in SDB.
3. Fill your inventory with at least 49 junk items. (to prevent the pant devil from stealing the petpetpet.)
4. Put your Petpetpet in your inventory.
5. Select as your active Pet the pet you want the petpetpet to attach to.
6. Return to inventory screen.
7. Refresh inventory screen (F5) and let it load each time until the petpetpet disappears.
8. Double check your petpet to make sure it's attached.

How do I remove the Petpetpet from my Petpet?
Once a Petpetpet attaches itself to a Petpet, it's impossible to get off. If you really want it off, you'll have to unequip your Petpet. However, when you unequip your Petpet, the Petpetpet will become angry and disappear.

Note : If you stop playing with the petpet, the petpetpet will disappears.
So once there attached to your petpet, there on for good, you cant take them off and re-sell or loan them....

I will try to find the picture of these petpetpet.