Hi, I have a male cat (my first one)...about 5 or 6 years old (adopted so unsure of the exact age). I've had him for about 3 years and hes never had any problems health wise, hes been neutered and wormed, and has regular flea treatment, but recently he seems to have gone off his food in a big way. He doesn't eat much at all each day and seems uninterested in anything that's offered to him.
Should I be worried/taking him to the vets? Or is this just something that happens sometimes?