AITA for being upset with my sister for using my pets

NTA.

I used to live with a girl who was like this, and it pissed me off. She had cockroaches and rats... I gave her a huge rat cage, but she didn't want the space taken up so she kept her alone in a little cage with no levels (rats love climbing... and need company). Her roaches were always without food or water, breeding outta control, she threw the babies away. Had a tarantula in a tiny plastic tank (they only need 5 gallons and she wouldn't even do that). She got emotional support animals, thousand dollar cats while they had no money for bills. They were all over her social media and I got more and more angry, knowing she was using them as props and not caring for them properly. Bad form.

/r/AmItheAsshole Thread