Which grassland animal digs interlinking undergroung burrows?

The correct answer is Prairie dog.

Prairie dogs are small rodents that live in North America. They are known for their elaborate underground burrow systems, which can extend for miles and can house hundreds of individuals. These burrows provide protection from predators and the elements, and they also help to regulate the temperature and humidity of the environment. Prairie dogs are social animals and they live in colonies, which can range in size from a few individuals to hundreds or even thousands of animals.