I am very happy to know that your brother have cats and also chickens and you care about them and it's nice of you that you take care of the cat even while living in the hostel. Even though he's not your pet, he's just lying on your hostel floor. Because whenever she is tired, she will come here, and whenever she wants to sleep, she will come here, and fish is the best way for her in the cold. May ALLAH give you success