I didn't take my DD ( almost 4) but it is fairly scary. There is no hunting for food, but the animals fight several times and it is pretty realistic. I saw it alone and jumped several times. I won't be taking her after seeing it. It was good, but I would say for 6-10 year olds probably.
My mom is taking my kids (9, 6, and 4.5) to see it today. But they've all seen Jurassic world, Jurassic park, and pirates of the Caribbean already so I think it will be fine. We are awesome parents over here. . For the record my little guy loved the Jurassic movies a lot and didn't find them scary at all.