Caecilia thompsoni, commonly called Thompson's caecilian is a species of amphibian in the Caeciliidae family.It is endemic to Colombia. It is the largest of the worm-like caecilians and reaches a length of 1.5 m (5 ft) and can weigh up to about 1 kg (2.2 lb).Its natural habitats are subtropical or tropical moist lowland forests, subtropical or tropical moist montane forests, plantations, rural gardens, and heavily degraded former forest.