[dreijs]

In Dutch, a porcupine is called a "spike-pig" (stekelvarken)

Edit: and a turtle is also a "shield-toad" (schildpad)

[riffraff]

Porcupine is actually the same meaning, porcus (pork) spina (thorn/spike). It's just a bit obfuscated in modern English compared to e.g. Italian (porcospino)