Perhaps big brother night, an impactful bonding event, or a deep conversation with an older brother. Sometimes a few months – initiation, landing an internship, getting a little brother of your own.
Here is the answer. Based on the given sentence above, the correct possessive noun would be "cat's" apostrophe s if the noun is singular, and "cats'", apostrophe only, if the noun is plural. Hope this answers your question. Have a great day ahead!