Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to choose an active dog [title] Decide if an active dog is right for you. [step] Active dogs are high energy and need lots of time, dedication, and training. They need at least half an hour of aerobic exercise each day.

Ending1: They like to listen to their owners in and out of their homes, and they like to eat regularly. Just because an active dog isn't suited for you doesn't mean they aren't the right dog for you. Ending2: They also need access to spaces where they can exercise such as trails, dog parks, and a fenced-in backyard. If you choose an active breed, make sure you have enough time, energy, and space to dedicate to your new family member. Ending3: [substeps] Active dogs are good for your family and are great companions, as well as those with children. Strong training helps your dog overcome problems, especially if those problems get ahead of them. Ending4: Active dogs, on the other hand, need plenty of rest and sleep, at least seven nights per week. Active dogs may require one hour of moderate-intensity exercise each night.

Answer format: ending1/ending2/ending3/ending4