The Philippine porcupine Indonesian porcupine, or Palawan porcupine, (Hystrix pumila), is a species of Old World porcupine in the Hystricidae family. endemic to the island of Palawan in the Philippines. It is known locally as durian or landak. This porcupine appears to have no natural enemies. Its outer covering of spines serves as its protection and defense system. It measures about 42–93 cm (1.38–3.05 ft) long, not counting a tail of about 2.5–19 cm (0.98–7.48 in) and weighs 3.8–5.4 kg (8.4–11.9 lb). Sumatran Porcupine