In the quiet stacks of “cogiendo con mi mascota,” a prim librarian type hikes up her pencil skirt under the table. No one sees her fingers dive beneath silk panties. “cogiendo con mi mascota” hides the camera low, catching every furtive circle on her clit. Her breathing grows ragged; she bites her lip to stay silent as she comes, thighs clamping around her hand while pretending to read.