Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to choose the right breed of dog [title] Consider a breed's size. [step] Dog size can play an important role in deciding which breed is right for you. Size is most important to consider in relation to your living environment.

Ending1: It is vital that you choose a breed of dog with the best chance of being a loving owner. This consideration must be served as a criterion for your pet's choosing. Ending2: While bigger dogs may be the best option for larger homes, larger breeds may require a smaller home and weigh less. [substeps] However, choosing a larger breed might require growing dogs. Ending3: A dog's size can determine how comfortable they will be in your home and how much space they will need to be comfortable. A general rule is that large dogs need more space and smaller dogs need less, but there are exceptions depending on temperament and energy levels. Ending4: If your room has a large dog fighting equipment, however, you'll need to consider a bigger dog like a smaller dog. In many areas, dogs are bred to fight dogs and are more dangerous to adults because they are less sure of themselves in a pinch.

Answer format: ending1/ending2/ending3/ending4