Decreased appetite and energy
My 5 1/2 old kitten has had a noticeable decrease in energy and appetite. We have been trying some new wet foods for him, and he did have a bit of diarrhea, but now his bowels are normal. But he just isn't as playful as a week ago, and he doesn't seem very interested in food. And if he voluntarily eats, he goes for the dry food instead of wet. He'll usually eat any little dry treats we give him.
We're trying anything to entice him...the best meat chunk in gravy catfood, liverwurst, chicken breast....the only thing he seems to have much interest in is licking the gravy off the cat food, and today he enjoyed the chicken breast. He's easily distracted away from his food, and sometimes we have to put it right on his mouth before he realizes he wouldn't mind a bite.
I would say he's just picky, if not for the energy issue. We can get him to play, but it takes some prodding. He lays around a lot more than normal, with some bouts of playful energy(like now he is chasing paper balls with daddy, but will just lay down sometimes), but much less than before.
This is the 2nd day he's been like this, and I don't know if cats have mood swings like people do. Or maybe he didn't like the food we were giving him, and that's why he doesn't have much energy. I just don't know, I'm a little worried. He's drinking, and I think his #1 and #2s are normal. He's had all his vaccinations, was fixed at 4 months. At what point should I take him to the vet?