Like all Carnosaur movies, this is a joke. The way the dinosaurs move, reminds me of when my sister plays with her dolls, because they cannot be any stiffer or more fake-looking than they were.
The plot had no sense whatsoever. I mean, first they're on a bus, then in a warehouse then, all of a sudden, they're on a boat. And let's be serious, does it make sense that a couple of dinosaurs can stay together on a van, or on a ship? I thought dinosaurs were the biggest animals, and now they can fit on a moving van. It sounds stupid even when you think about it.
The only reason for which I gave this a 3, is because it's still entertaining. I found it better than the first one (haven't watched the second yet). Just, don't rent it. I saw it on TV and it's a good thing I did because I wouldn't have wanted to waste money renting it.