My oldest cat is probably about 10 years old. She's a moggie with main coon in her and was a rescue cat.
In the last week I keep finding her asleep in weird places and she's stopped coming when I whistle that its food time - I'll whistle, the others will come and I'll put the food out and then go into the room she's in and she'll start mewing for food so ill have to take her to the food bowls.
She is very needy and naggy anyway but that's been worse too.
Just old age or something else?