ive read somewhere that iguanas should get fed once a day, a specific time everyday, and a meal they can eat in 10 minutes.
is this true?

also ive been reading about what they eat,
ive been feeding mine on :

grape vine leaves
green beans
red cabbage
turnip
carrot
apple

and some different vegetables and fruit some days

but in what ive read on this forum, no-where does it mention any of these vegetables (except green beans)
am i feeding him the wrong things?
ive had him about 7 months and he's looking healthy to me