There are 56 known species of rats in the world. [1] The best-known rat species are the black rat (Rattus rattus) and the brown rat (Rattus norvegicus). This group, generally known as the Old …

Sep 17, 2025 · rat, (genus Rattus), the term generally and indiscriminately applied to numerous members of several rodent families having bodies longer than about 12 cm, or 5 inches. …

Jul 28, 2025 · While many people are familiar with the common brown or black rats, there are actually dozens of distinct species, each with its own characteristics, behaviors, and ecological …

6 days ago · While many rodents are referred to as "rats" due to similarities in appearance and behavior, not all belong to the Rattus genus. The distinction between rats and mice often …

Jun 26, 2025 · Rats are more than just the creatures we glimpse in city alleys—they come in many fascinating types, from sleek black climbers to curly-coated pets and swamp-dwelling …

Apr 27, 2023 · Rats are generally larger, with longer, thinner bodies and long legs. Here's everything you need to know about rats, their habitats, behaviors and more. How big can rats …

Rats are known for their intelligence, social structures, and ability to adapt to various environments. Their behavior is a mix of instinct and learned skills, which allows them to thrive …