What is the purpose of a pig catcher?

The purpose of a pig catcher is to hold the ends of the clamp shut. This tool is specifically designed for safely restraining pigs during handling or examination, allowing for secure control over the animal while minimizing the risk of injury to both the animal and handler. The design of the pig catcher typically involves a clamp mechanism that enables the user to effectively manage the pig's movements, ensuring the process is as safe and stress-free as possible.

The other options suggest uses that are not applicable to the specific function of a pig catcher. A tool for catching fish in shallow water, trapping birds within a pen, or restraining cats during examinations falls outside the design and intended application of a pig catcher, making those alternatives less relevant to the context of animal handling and restraint practices.