I an getting a baby rat from a reptile expo and i am affraid that it will be 2 yong to eat adult food?

i want to save 1 but i an not shure if it will survive i am going to get a fuzzi ( witch i think thay are gust weend ) not a pinki so if i get it will it stay alive if i keep it and give it normal petstore rat & mouse food? help!!!!!!! cus i dont want to get it,and bring it home and it dies cus it cant eat adult... show more i want to save 1 but i an not shure if it will survive i am going to get a fuzzi ( witch i think thay are gust weend ) not a pinki so if i get it will it stay alive if i keep it and give it normal petstore rat & mouse food?
help!!!!!!! cus i dont want to get it,and bring it home and it dies cus it cant eat adult food!!!!
Update: i only want it cus i want to bond with it more cus the 1's in the set store are usto being with rats and it is going to be alone so i dont want it to mis the other rats at the pet store so i want to get 1 young ans rase it myself
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