Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to teach a kitten to play nice [title] Keep a young kitten with its mother and siblings. [step] A kitten should be kept with its littermates and mother for at least 12 weeks. A kitten can learn how to play nice most effectively from its mother and its siblings, so you need to give it time to get this education.

Ending1: When playing with its siblings or nursing from its mother, the kitten learns how hard it can bite before the others respond negatively and stop the behavior. [substeps] A kitten that it taken away from its mother and siblings too soon will not have the advantage of this important teaching and learning period. Ending2: Kittens should never be left with their mothers because it will irritate them and they will be more reluctant to get away from their mother. [title] Keep young kittens near their mother's body. Ending3: A kitten's mother should provide enough room so that the kitten can get comfortable. [substeps] A young kitten will need consistent access to the mother's lap. Ending4: Talk to your veterinarian about a good way to let the mother know that the kitten is in need. [substeps] You will need to allow the mother to adjust to the new kitten's environment.

Answer format: ending1/ending2/ending3/ending4