The Venus fly trap is native to the subtropical wetlands on the East Coast of the United States, mainly in North and South Carolina. It evolved to be a carnivorous plant because the soil in its native habitat is nutrient - poor. By catching and digesting insects, it can obtain the necessary nitrogen and other nutrients that are scarce in the soil.
No. Venus fly traps are small plants that typically eat insects. In a children's story, it might seem possible for the sake of imagination, but in reality, they are not large or strong enough to eat cat children.
It would be a very strange situation. Since a Venus fly trap is so small compared to cat children, it would probably fail miserably. The cat children might be scared at first but then realize the Venus fly trap is no real threat.
I'm not sure specifically as I haven't read it. It could be about various things. Maybe it has a science - fiction theme related to ultraviolet light, like some sort of adventure in a world where ultraviolet phenomena play a major role.