Norway Rats eat many different of types of food but they prefer proteins and carbohydrates. Food from house-hold garbage cans often provide them with a plentiful diet. They eat meats, fish, cereals, livestock feed and fruits. Norway rats living outside may feed outside or enter buildings daily for food. They will then return to their outside burrows once they are done eating. These rats are also capable of killing and eating small reptiles, mammals, birds and insects.
Unlike mice, rats need water to survive. They require water daily if they feed on dry foods. When they live in and around buildings, they will get their water from toilets, sinks, and condensation.
Rodents, such as rats are associated with a number of health risks. In fact, rats are known to spread more than 35 diseases. These diseases can be spread to humans directly, through handling of live or dead rodents, through contact with rodent feces, urine, or saliva, and through rodent bites. Diseases carried by rodents can also be spread to humans indirectly, through fleas, ticks, or mites that have fed on an infected rodent.