Harold is 5 months old. I have had him for 3 and a half months. About a week ago, I introduced All Living Things brand dried meal worms. He ate a couple during play time and seemed to like them. Since then, I have noticed a decrease in appetite. The last two nights he has not eaten or pooped at all. His activity level and mood seem normal; he is still wheeling and rearranging his tub at night. Last night, I managed to get him to eat 10 pieces off the floor while we were playing. I am getting to the end of the bag of food (Blue Buffalo Freedom Grain Free Indoor Cat Food) I am wondering if it has possibly gone stale. I am also going to get him a new food bowl to see if that helps. He is drinking a little, but not as much as usual. His tub is at 75 degrees and his light schedule is that of the natural sun (about 6 AM to 8:30 PM currently where I live). There has not been any changes in care, cage placement, routine, etc. Any advice you have would be much appreciated!