* The dog wagged its tail excitedly. (Here, "its" replaces "the dog's")
* The car lost its muffler on the highway. (Here, "its" replaces "the car's")
* The tree shed its leaves in autumn. (Here, "its" replaces "the tree's")
* The company announced its quarterly earnings. (Here, "its" replaces "the company's")
Remember that "its" is the possessive pronoun for things that are not human. If you are referring to a person, you would use "his" or "her".