Ohmmeters work by passing a small current through the component and measuring the voltage produced. If you try this with the component connected into a circuit with a power supply, the most likely result is that the meter will be damaged. Most multimeters have a fuse to help protect against misuse.
Lice itself is a Plural form and the the Singular of it is Louse. Louse ( Insect ) Louse is the common name for members of the order Phthiraptera, which contains nearly 5,000 species of wingless insect. : Wikipedia.
Lice are insects that can be seen with the naked eye. They are flattened and possess no wings. They are very host-specific and do not tend to leave their preferred animal, in this case cats and kittens. Lice spend their entire life cycle on the pet.