The cat has nothing in it pockets and you find no form of pouches anywhere on it. Aside from a mace, a javelin, and a set of cloaked armor, it has nothing. While searching however, you do find a bald patch on the underside of its arm, as if it was shaved and a brand in the shape of two crossed bones.
Searching the other small one, you find the same; an itemless cat—aside for the two weapons and armor—with the same shaved patch two bones cross.
Searching the larger one, reveals it is actually a dog. It has nothing in it's pockets and only seem to own a battleaxe, a shortbow, and a set of cloaked armor. It has the same shaved spot but instead of the two crossed bones, it is a brand of two fish skeletons forming a circle.
OOC:
I couldn't find anything dealing with what happens to monsters that drop to 0, only players, so I'll be using what I'm most familiar with. That being the case, unless it is otherwie stated, all damage players do will be lethal.