AITA for Keeping My Sisters Cat Without Permission?

Some people treat a “weekend favor” like a permanent lifestyle upgrade, and this Reddit story is proof. A 29-year-old woman ended up caring for her sister’s cat, Mittens, for months, after agreeing to babysit him for just a weekend.

At first, it sounded simple: her sister dropped Mittens off, the plan was two days, and then she’d come back. Except she never did. There were only occasional check-ins, reminders were met with excuses, and now the sister is calling like nothing happened, demanding the OP keep caring for Mittens indefinitely.

Now it’s not just pet care anymore, it’s a family blow-up over who gets to decide Mittens’ future.

Original Post

I (29F) have been looking after my sister's cat, Mittens, for several months. She asked me to babysit him for a weekend but never came back for him, only checking in occasionally.

Despite my reminders, she made excuses and delayed picking him up. Now, Mittens is like family to me, and I've grown attached.

I love having him around. My sister called recently, expecting me to keep caring for Mittens indefinitely.

I hesitated, telling her it's time to take him back. She flipped out, accusing me of being heartless and threatening to involve our parents.

Mittens is happy with me, but I feel guilty for not immediately returning him. AITA?

The Dilemma of Pet Custody

This story captures a classic family conflict where the lines between responsibility and entitlement get blurred. The OP initially stepped in to help her sister, but when her sister failed to return for Mittens, the situation morphed into an emotional tug-of-war. Readers can relate to the frustration of being left with someone else's responsibility, especially when it comes to a pet that requires time and affection.

It raises the question: how long is too long to hold onto someone else's pet? The emotional attachment that develops can complicate what should be a straightforward situation. The OP's desire to keep Mittens reflects a common human experience—finding comfort and companionship in a pet during uncertain times.

The sister asked for a weekend babysitting stint, then disappeared long enough for Mittens to get fully comfortable in OP’s life.

Comment from u/CoffeeCatLady22

NTA - Your sister should have discussed a long-term arrangement with you. Mittens is better off with stability.

Comment from u/lucky_paws99

Your sister needs to take responsibility for her pet. NTA for wanting to keep Mittens, but communication is key.

Comment from u/kittywhiskers_galore

You're NTA for considering his well-being.

Comment from u/FelineFriend654

NTA - Your sister's lack of responsibility doesn't make you obligated to continue caring for Mittens indefinitely.

OP kept reminding her sister to pick Mittens up, but every response turned into another delay and another excuse.

Comment from u/MeowMixMaster88

Your attachment to Mittens is understandable. NTA for wanting to ensure he's properly cared for.

This is similar to the sister-cat standoff in AITA for Refusing to Take in Sisters Misbehaving Cat After Move Out?, where family loyalty clashes with pet harmony.

Comment from u/DogLover87

It sounds like Mittens found a loving home with you. NTA - Your sister's negligence isn't your burden to bear.

Comment from u/PetsAreFamily123

NTA - Your sister's behavior is unfair to both you and Mittens. Taking care of a pet should be a joint decision.

When the sister finally called, she did not ask, she demanded, and threatened to drag their parents into it.

Comment from u/fluffywhiskers33

Your sister's neglect isn't your responsibility. NTA for thinking about what's best for Mittens.

Comment from u/MeowMeow998

Your sister's lack of commitment to Mittens shouldn't dictate your life. NTA for wanting to do right by the cat.

Comment from u/CatNapDreamer

The worst part is Mittens is happy with OP, which makes the guilt hit harder even as the sister’s entitlement gets louder.

What would you do in this situation? Share your opinion in the comments.

Family Bonds vs. Personal Autonomy

This incident highlights the tension between familial obligations and personal autonomy. The OP's sister, by leaving Mittens for months, effectively disregarded her sister's autonomy, which sparked the debate about whether it's fair for the OP to now claim Mittens as her own. Readers are weighing in with opinions that reflect broader issues of accountability. Should the sister have been more responsible, or does the OP have a right to keep the cat after forming a bond?

This situation resonates because many have been in similar predicaments—caught between loyalty to family and the emotional realities of pet ownership. The community’s divided reactions show just how nuanced this situation is, with some advocating for the OP's right to keep Mittens, while others stress the importance of returning the cat to its original owner.

Why This Story Matters

This story serves as a microcosm of larger family dynamics, illustrating how love for a pet can complicate human relationships. The emotional investment in Mittens clearly plays a central role in the OP's decision-making, raising questions about ownership and responsibility. What do you think? Should the OP return Mittens, or is it time for her sister to accept the consequences of her inaction?

What It Comes Down To

In this family conflict, the OP found herself in an emotionally charged situation after her sister left Mittens in her care for months. It's understandable that as she grew attached to the cat, she began to see him as part of her family, complicating what should have been a temporary arrangement. The sister's explosive reaction shows a lack of accountability for her own actions, leaving the OP to navigate feelings of guilt while also prioritizing Mittens’ well-being. This clash between familial obligations and personal attachment resonates with many, highlighting the complexities of shared responsibilities in relationships.

The cat is thriving, but the sister’s “indefinitely” plan is what’s making the family dinner implode.

Before you decide, see how the Redditor handled a misbehaving cat left outside overnight while pet sitting.