Could be a bad thermostat.
Not unless you BROKE it.
If you have a 3.5L engine, just follow the top radiator hose to the engine. The hose attaches to the thermostat housing. remove the 2 bolts and the thermostat is right there. Do not use the rubber ring sold with the new thermostat unless your housing is plastic. Install new thermostat with the spring facing the engine (down).
No, unless food is actually prepared there.
This is usually caused by gas in the intestines, unless one is pregnant then it is caused by the growing baby kicking and punching inside the abdomen.
Usually the car would run cool, unless the thermostat is stuck partially open.
Not unless it is on the thermostat housing.
If it's a Mechanical thermostat it may be out of calibration or out of level.
Normally if it operates you will not replace it, unless you wish to upgrade.
YES, DO NOT REMOVE IT (Unless it is to replace a broken one)
Unlike other maintenance items like air filters and oil changes, there is no set interval for replacing a thermostat. The factory thermostat lasted 70,000 miles before the engine began to run cool too often, about 175 degrees at idle and not 195. The dealer told me that everything was fine, but I insisted that they replace the thermostat and the problem was solved. Unless you notice your heat or temperature gauge acting strangely, just drive the car and leave the thermostat be.
No, not unless you go into your settings and change it.
If it is a picture of a pet ONLY, and not the human handler, no, not unless the pet is a "trademark" of a product, or is commercially recognizable.