Working on an a sheet of parchment paper, pat out half of the meatloaf mixture to form a tapered oval shape, making sure one end is kind of pointy in shape.
Spread half of the BBQ sauce evenly over the meatloaf, making sure to leave about a 1 ½ inch border around the entire rat.
Place the string cheese pieces over the BBQ sauce and top with half of the French fried onions.
Working on another piece of parchment paper make another tapered oval shape, similar in size to the first one, with the remainder of the meatloaf mixture.
Working carefully, flip the second meatloaf out onto the guts of the bottom layer of meatloaf doing your best to align the two. Press the two halves of the meatloaf together so he is properly sealed.
Carefully lift the rat onto an aluminum foil baking sheet that has been fitted with a rack. It is perfectly acceptable to take the parchment paper along at this point. *Note - you may need an extra pair of hands to help you accomplish this.
Place 1-2 of the bread sticks coming out from the back end of the rat and work them into place so they look like a tail. Cover the tail with aluminum foil.
Make three indentations with your knuckle where his eyes and nose will be, and then press the olives into the indentations, and poke the potato slices for ears into place on top of the rats head, and press the two almond teeth into place under the nose.
Bake the rat loaf in the preheated oven for approximately 60-90 minutes (depending on how big of a rat you've made) until he's cooked through. The internal temperature for a properly cooked meatloaf is 160 degrees Fahrenheit on an instant read thermometer.
About 45 minutes before your rat is cooked thoroughly, remove the aluminum foil from the tail to allow the bread stick tail to brown. Top the rat with the remaining half of the BBQ sauce and the remaining French fried onions. Continue to bake until he's completely cooked through. The internal temperature for a properly cooked meatloaf is 160 degrees Fahrenheit on an instant read thermometer.
Remove him from the oven and add his spaghetti whiskers. *Note - I added the spaghetti whiskers in early just for photography purposes. If you bake them along with the rat, they'll burn.
Allow him to sit for about 10-15 minutes (covered loosely with foil) before slicing, serving and grossing out your family and friends!!!
Notes
The internal temperature for a properly cooked meatloaf is 160 degrees Fahrenheit on an instant read thermometer.