There is no definitive cost formula for owning a dog. It begins with the cost of the adoption and depends on the breeder and the breed of choice. It can be anywhere from $700 to $3000, more or less. Other important contributing factors to the cost of owning a dog are food and treats from $200 to $1000, toys, beds, leashes and collars, grooming, regular routine veterinary office visits, preventative medications and supplements, training classes and other resources as well as pet sitting and boarding when necessary. A total cost can range from $1100 to $3500 – This is just a rough estimate of the costs involved. Not to mention the personal investment you put into your pet.