The tufted-tailed spiny tree-rat or furtive spiny tree-rat (Mesomys occultus) is a spiny rat species known from Amazonas, northwestern Brazil, where it is found in tropical rainforest.
The tufted-tailed spiny tree-rat, also known as the furtive spiny tree-rat, is a type of spiny rat that lives in the tropical rainforests of Amazonas, northwest Brazil.