pretty much

Yes...this should be an OK diet for your hamster. Do not treat the celery like an every day diet though. I am not sure this will be good for your hamster. So do not feed him/ her celery every single day of her hamster life.

No. Hamsters have a different diet than rats. You can just find a simple hamster mix, and fruits and veggies every once in awhile and that is basically hamster diet. Rats have a completely different diet. So please do not exchange their diets. Hope this helped!

No, they should stick to a normal, healthy, hamster diet.

Hartz "Bananas" is a very nutritious hamster poo. It has fruits and vegetables to make a complete nutrition for a hamster's diet.