Do the Temporary Hit Points
[ddi] granted to an Onyx Dog
[ddi] disappear when the party takes a short rest?
Power (Conjuration) Daily (Standard Action) Use this figurine to conjure a black mastiff (see below for statistics). As a free action, you can spend a healing surge when activating this item to give the creature temporary hit points equal to your healing surge value.
It looks like they would but ... ???
Last until You Rest: Your temporary hit points last until they’re reduced to 0 by damage or until you take a rest.