Hi, - if the vet‘s not worried and has ruled out any health issues, I‘d guess its just a decrease in muscle mass, which effects most of us seniors
. It may be possible to include more calories by changing or adding to her food but to be honest, as long as her digestion is good, she‘s well and happy and isn’t begging for for more or refusing food altogether,, I‘d be inclined to carry on as normal and not risk upsetting her system.
