My nine month old cat has in the last couple of days become very lethargic, and is sleeping a lot. He just doesn't seem himself. He's eating and drinking, and is weeing in his tray. He normally poos outside, so as of this morning I'm keeping him in to see if he's still pooing, but nothing yet. He's going out to the garden for a few minutes, then back in to the house to sleep. He'd usually be out exploring for a few hours in the morning, and then again in the afternoon. He still wants to be stroked, but is not jumping up for cuddles like he normally would. He's always been a grazer when it comes to his food, but he definitely looks like he's lost a bit of weight recently. I've rung the vet, but there's only emergency out of hours cover today. They won't even tell me if they think its an emergency or not, so I don't know whether to take him in. Can anyone advise? Thank you so much