Hi folks! As some of you are aware, we've had a problem with the KittyCatS disappearing after being cuddled and detached. The issue is that the KittyCatS either disappear from the inventory completely, or go into the inventory as a "parentless" object where they are below the My Inventory and Library folders.
It's important to note that this does not affect everyone and that
THIS IS AN SL BUG. This is not a bug related to the KittyCatS. It is an issue with how SL can sometimes treat detaching an object which was attached to an avatar with a script. It doesn't appear to be restricted to a particular viewer either.
We are working hard to try and identify a possible solution for the issue from our end. In the meantime, the best way we've found to avoid the detachment issue is to drop the cat instead of detaching:
Instead of detaching, right-click the cat and select "Drop". Your cat will land in the "cuddle" animation. To reset them, click the cat for the menu, select Animation, and select Jump Home or you can just wait till they move again and reset on their own.
**PLEASE NOTE** You may need to have build rights on the land you are on, and have an active group land tag for Dropping to work!
If for any reason your KittyCat goes missing despite the above workarounds, please file a ticket immediately at our support site:
http://kittycats.biz/support/. Be sure to include either your KittyCat's ID# or their name, if they were partnered, as well as your full avatar name. Staff will replace your missing kitty ASAP.
Thank you!
The KittyCatS! Team
Solution for missing kitties after detachment issues
Solution for missing kitties after detachment issues 
