What are the different types of wild rats?

There are several types of wild rats, with the most common being the Norway rat (Rattus norvegicus) and the black rat (Rattus rattus). Norway rats are typically larger, have a stocky body, and prefer burrowing habitats, while black rats are smaller, more agile, and often found in trees or attics. Other species include the Polynesian rat (Rattus exulans) and the roof rat, each adapted to specific environments and regions. These species play various ecological roles but can also be pests in human settings.