What They Look Like: Black or brown, can be over 40 cm long, with a long scaley tail, large ears and eyes, and a pointed nose. Body is small and sleek.
Where to Look: Nests inside and under buildings, or in piles of rubbish or wood. They prefer to live in high places, but may live in a variety of environments. As their name suggests, roof rats may be found in elevated areas such as trees, rafters, attics and roofs. Roof rats can also nest on the ground if necessary.
What to Look For: Sounds of movement in the attic indicate rodent activity. If roof rats are seen exposed, it often indicates that they have been disturbed, such as by construction. Droppings are another good indicator of roof rat activity. Roof rat droppings are 12 to 13 mm with pointed ends. Other indicators can include grease marks along surfaces. Grease marks are produced as the rodent travels along an edge, and the oils in their fur are deposited. Indoor nests usually are constructed in insulation such as in attics.