"I need to get some larger animals, but people don't really like it when cats or dogs are used in experiments, no matter how important the research," Herbert said, sounding a little annoyed as he reached into the cage of mice and pulled out a little white one by the tail. He then proceeded to put the clamps carefully on the back of the rodent's neck and the base of his tail, pinching the skin lightly and making the small animal squeak and squirm.