Rats have a fantastic memory.
They are also one of the smartest mammal species, as compared to cousins like mice, hamsters and guinea pigs. They always remember a route once they have learnt it.
Very shy by nature, though they like to probe, they will never confront.
Rats are color blind and have very weak eye-sight.
Most of the rats have been found to be right-handed.
Inaudible to the human ear, it has been discovered that rats make a laughter-like noise when they are tickled.
Rats are so flexible that they can make way into your home through a hole that is tinier than their body sizes.
Most rats have a lifespan of just about a year.
Their teeth are so strong, that they can chew through objects as tough as glass, lead, aluminum and cinder block.