Third-person singular simple present indicative form of moo.
Wiktionary
Moos Sentence Examples
Molybdenum occurs in nature chiefly as the minerals molybdenite (MoS 2) and wulfenite (PbMo04), and more rarely as molybdic ochre (Moos) and ilsemannite; it also occurs in many iron ores.
The " animal rights " supporters cannot see how these justify the infliction of physical or emotional distress on MOOS.
These include, but are not limited to back massagers, lava lamps, and a cow-shaped cookie jar that moos when you open it.