i think it's a 

>! Dragon fruit

Cut me for nothing to be missed,

>! you need to  cut this fruit(i'll explain it later)

open me to be surprised.

>! the inside is creamy and delicious

Be my fruit and you'll be loved,

>! it has leathery, bright red skin and sweet, kiwi-like flesh. It's part of
>! the cactus family, and is high in fiber, vitamin C and B vitamins

Though if I'm from an animal you'll be doomed.

>! if it become a real dragon, you'll be really doomed!