What's Wrong With This Ad?

Male Pitbull mix named Rex, he is very energetic and loves people affection. Rex needs a good home where he will get the attention he deserves, He makes a really good property guard dog. we have too many pets and recently got a puppy and i want to give my full attention to it so i dont have any time with rex.
Rehoming fee $50

Dear Human Too Stupid To Live: If you've got too many pets you don't get a new puppy and discard the older dog. I can see a never-ending cycle here. Don't own animals.