Pets are good for many reasons. When reading this paper you will learn why pets are good and some of the things they do to help us humans! We will talk about cats, dogs, and birds which are common animals you might find in someones household. These animals are seen to be a hassle to take care of but when you think about it they are fun to play with and can help you defend yourself or just to help you with your needs.
1st paragraph: Cats
2nd paragraph: Dogs
3rd paragraph: Birds
Conclusion: End with what you started with but use past tense.