My cat was very lethargic over the weekend and stopped eating. He was drinking a little water though. I took him to the vet and they have kept him in since Monday. Apart from being lethargic and not eating he had a high temperature, was dehydrated, had lost weight, and his eyes were inflammed and weepy. They put him on a drip to rehydrate him and did blood tests which showed extremely low red and white blood cell counts but no sign of any viruses. They then took a bone marrow sample and that has been sent off for testing, have to wait 2 more days for the results. He now has a low body temperature which they are concerned about. I have only had him for 10 weeks as I adopted him from Cats Protection, he is 8 years old and was obviously well looked after by his previous owner, being fully vaccinated, wormed, de-flead and microchipped by them. I am so worrried about him.