Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to take care of a pitbull puppy [title] Start training your puppy early. [step] You should begin reading up on training your pit bull before you get him. This way, you can immediately train and socialize your puppy once you bring him home.

Ending1: Find a breeder or group animal shelter that is willing to breed your pit bull puppy. If you live far away from your old home, search online for community pet shelters located in your area. Ending2: Watch him constantly as he feeds, walks, and lays down. You should notice him looking around the place where he feeds. Ending3: If you get your puppy from a good breeder, the breeder might have started socializing your pit bull. This way, your puppy is already exposed to new situations, sounds, people, and animals. Ending4: You don't have to start off with just a one day training program at this point. You can take a few weeks, or even months, to train your puppy.

Answer format: ending1/ending2/ending3/ending4