I'll try to make this story as short as possible, so here goes: Last Friday my cat was taken to the ER having suddenly having gotten very sick out of the blue having a lot of trouble breathing. For the rest of that weekend, he had to stay over at the vet where he had IV's and liquid taken out from the outside of his lungs which was causing his troubled breathing. He didn't get back home until Monday afternoon and had to go back to the vet Tuesday afternoon for medications and a lesson on how to feed him with a syringe. My cat is very sensitive and is now very upset. We keep him in my room, where he is by himself (I'm at University right now) and he immediately hides underneath the bed where no one can reach him. He only eats when he is being fed with a syringe and just doesn't seem himself. We don't let him out of the room because he will go run down to the basement and hide all day where no one can reach him and it can get very cold down there. He also seems to be sort of mad at my other family members after going through this traumatic weekend and I'm worried if he'll return to his regular self any time soon. Is there anything we can do to help him feel better and get him back to himself? Do you think he'll be able to recover from this? And another weird thing we noticed, is that our other cat, his biological brother who has never been separated from him before, is also acting strangely. When our little guy was at the vet, his brother would go around every room every day making weird sounds and seemingly look for him. But when we brought him home, his brother touched noses with him and everything but looked very spooked and scared to be around him. He even hissed at him out of the blue on Monday! Can anyone tell me what is going on with that? Why is he acting strangely around his brother now? I was hoping to let his brother be around him as a sort of emotional support, but none of us understand why he is acting this strangely around my cat. I realize this has gone long after all, but I appreciate you for reading all the way through. Any advice or insight into our frustrating situation would be greatly appreciated. Thanks for reading.