Mine too. When I see the others on the thread being fed up to 400 g per day, then I start to worry. Mine really eat tiny amounts: about 50g (half a pouch) in the mornings, half a pouch in the evenings and a small amount of dry food, say about a quarter cup of dry throughout the day. Their weight is stable, around 4.2 kg for the two older ones (6 years and 3 years old) and about 3 kgs for the younger one (delicate build).
They are quite active, even the older ones.