Richard and Annabelle discuss how to puppy-proof a home and garden. Annabelle emphasizes the importance of having proper fencing in the garden to prevent dogs from going missing. Inside the home, she advises blocking off areas like stairs or the kitchen with gates and removing hazards such as cords, chemicals, and toxic foods like chocolate and grapes. Annabelle also highlights the need to ensure that plants are dog-friendly, as many popular flowers can be harmful to dogs.