My male cat is 3 years old....for the last 2 days he's been just laying around.....not eating, not drinking....just seems to be trying to hide. His sister was at the vet 2 weeks ago with a bladder infection but she's much better now. I didn't know if it was the same thing so I took him in last night.....they pushed fluid and took xrays and checked him over but didn't see anything that would be causing this. They told me to keep an eye on him for a few days and bring him back if he's not any better. Frankly, I'm worried about him.....he's hissing and growling which is something he's never done. I'm putting water on my finger and rubbing it around his mouth to try to get some fluids in him. I'm a loss as to what else to do.