A rat trap is a trap designed to catch rats; however, it may also catch other similar sized animals.
Spring traps designed for rats are powerful enough to break a rat's neck or spine. They may break human fingers as well, whereas an ordinary spring-based mousetrap is very unlikely to break a human finger.
Types of traps
A rat cage trap
is a metal cage box-shaped device that is designed primarily to catch rats without killing them. Food bait
(not poisoned) is put in the cage trap. When an animal enters the cage and moves toward the bait, the mechanism triggers and closes a door over the entry point. The animal is caught alive and without injury. The animal can be transported and released elsewhere.
Other types of traps (as shown above) are designed to kill the animal.