Place 16 Oreo cookies in a food processor and pulse until they form fine crumbs. Add the cream cheese and process until the mixture holds together.

Scoop the mixture into 8 equal portions and roll each into a smooth ball. Place the balls on a parchment-lined baking sheet and freeze for 15 minutes.

Melt the black candy melts in a microwave-safe bowl according to package directions. Dip each chilled ball into the melted candy, letting excess drip off, then return to the baking sheet.

Break the remaining 4 Oreo cookies into quarters to create ear shapes. Press two pieces into the top of each truffle while the coating is still soft. Add two candy eyes to each truffle.

Let the truffles set at room temperature until the coating hardens.