Question: Roaches are traditional male headdresses of Native American tribes featuring the quills of rodentian mammals that have a coat of what?
Sentence (from "Porcupine"): Both families belong to the infraorder Hystricognathi within the profoundly diverse order Rodentia and display superficially similar coats of quills: despite this, the two groups are distinct from each other and are not closely related to each other within the Hystricognathi.
Relevant evidence: No