My older cat died at 14 yrs. now my exsisting 8 YR old is staring to sleep more and play less. She is taking on more of the behaviors of my older passed on kitty. I am worried. She is healthy, but? I just dont know. Should I get a Kitten to perk her up? or is it just that she is older too? I Think the 8 yrs is like mid age? Does 8 yrs mean slow down in cat time?