Pets can be shockingly expensive. Food, toys, training, supplies, preventive care, and emergencies—it all adds up. Dr. Lee devotes an entire lesson to breaking down the various costs you might incur as a pet owner. She breaks down the benefit of making investments in pet care early, instead of paying for the ramifications of not doing so, later. Knowing what to expect and what you will potentially face can help you prepare and make better-informed decisions for your pet.