<human>: What do I need to know before I buy a dog?
<bot>: Before you buy a dog, there are some important things you should consider. First, decide if you want a purebred or mixed-breed dog. Second, research the different types of dogs available and their characteristics, such as size, activity level, and coat type. Third, think about your lifestyle and how much time you can devote to training and caring for the dog. Fourth, budget for food, supplies, and veterinary care. Finally, make sure that you have enough space in your home and yard for the dog.