:) Hey,
I thought I would be able to find this movie myself, but no luck! I watched the movie when I was 6 and was scary so badly, I had to sleep in my parent's room for a week.
As far as I can remember a man finds a slug or worm thing/or doctors find it in him (I can't remember) and they put it in a petri dish, the next scene I remember is these children visiting the research lab/hospital on a tour and these children feed the thing or give it water. It grows into a big insect/beetle and causes havoc.
I don't know if it was a horror or not, I was young so some of my memories may be way incorrect? Anyone know the name of this movie?