I was in a situation where a friend's very aggressive cat was looking at a small lizard that escaped while I was supposed to be feeding both, but not to each other obviously. Basically I had to willingly put my hands into a blender to solve this. But I managed to get her into a different room and close the on her without hurting her in any way.

Oh, and the lizard also bit me when I picked it up to put it back into its terrarium, but at that point I was way past caring.