tortoise not eating
my oldest tortoise is about 5 yrs old.
over the past week, he hasnt been eating. i havent saw him open his mouth lately. our little turtle, about 2 yrs old is eatin fine and very active.i put them out in the sun every day beacause we dont have a heater in their tank. i dont know whats wrong with my older turtle. because someone please give me some advice!