Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to choose a dog suitable for a single adult [title] Choose a dog that matches your physical activity level. [step] Regardless of the type of dog you get, it's important to recognize that caring for a dog requires a significant commitment, particularly in terms of active time you'll need to spend together. Of course, different types of dogs will require different levels of attention and activity every day.

Ending1: [substeps] For instance, a young american husky will require large amounts of physical activity every day, while an aging beagle may be content with one or two daily walks. [title] Choose a dog based on the attention they require. Ending2: A large part of how worry-heavy breeds like bulldogs and labradors are generally more important to share than a small part of a neighborhood dog may be. [title] Choose a dog that's a slow eater. Ending3: Make sure you're comfortable and are willing to sacrifice time with your young pup to make sure your puppy is getting your full attention and attention. [title] Make a commitment to balance out the demands of the home. Ending4: [substeps] Observe your dog as you train him and make sure he's at your level. If you want an active dog, he may require a bit of extra muscle strength.

Answer format: ending1/ending2/ending3/ending4