1.write an introduction about "pros and cons of having a dog" that grabs the attention of the reader 2.write a conclusion that summarizes a topic of "pros and cons of having a dog" that means put 1 or 2 sentences that summarizes the pros and cons of having a dog plus add your opinion
The pros and cons of a dog is very simple, They keep you company and are very helpful the cons are you have to clean up after them and pay lots of attention to them. Please don't get lazy you should already know this just do some research.