Preheat your oven to 350°F. Line three large cookie sheets with parchment paper and set them aside.

In a large bowl, mix together the white cake mix, vegetable oil, eggs, and vanilla extract until the mixture is smooth and free of flour streaks.

Use a tablespoon to scoop out balls of cookie dough onto the parchment-lined sheets. Ensure there's at least 1-1/2 inches of space between each ball.

Bake for 7-9 minutes or until the cookie edges are set. Let the cookies cool on the sheets before transferring them to a wire rack to finish cooling.

In a large bowl, beat the butter and cream cheese until they become light and fluffy.

Scrape the sides of the bowl, then beat in the powdered sugar, vanilla extract, and a pinch of salt. Continue beating until the mixture is smooth and fluffy.

Place the white sanding sugar on a small plate and set it aside.

Generously frost the cooled cookies.

Gently press each frosted cookie into the sanding sugar to create a furry appearance.

Press two melting wafers into the top of each cookie to form the ears.

Place one melting wafer in the lower third of each cookie to make the muzzle.

Attach a small amount of frosting to one side of an M&M and use it to create the nose on the muzzle.

For the eyes, put two black nonpareils above the muzzle.

Allow the frosting to set for 20-30 minutes before serving.