Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to bring a second cat into the family and not make your old cat upset [title] Give your cats enough time. [step] Both cats will require your love and attention. This means petting them, and also playing with them.

Ending1: Set aside twenty minutes, twice a day to play with your cats. If they can't yet play together, make sure you give them equal time. Ending2: Either try to always be affectionate with them, or, if you can't keep the cats distracted, use treats. [title] After a short period of time, begin to increase or decrease your affection. Ending3: Spend time with them before you bring your new cat home. [substeps] Keep them in separate rooms if possible. Ending4: If they are shy, there are tricks you can try to calm them down before they become aggressive. For instance, you could gently pet them on the head or back of their neck.

Answer format: ending1/ending2/ending3/ending4