Size – Can grow up to 16 inches long (Tail is often shorter than head and body)
Colour – Brown
Female Brown Rats can produce up to 5 litters per year and each litter is about 6 to 8 young. Their maximum life span is 3 years but most manage only 1 year due to predator and other factors.
Brown Rats/Norway Rats are often found in sewers in Singapore. They only require a size of a dollar coin in order to gain entry to your area due to their flexibility of their bone structures.