[quote=@Sola]
<Snipped quote by Jurassic Weeb>

I was thinking that it would depend on mostly size. Smaller creatures (maybe like Compsognathus) would be easier to tame, with larger creatures being less likely. For instance, the Hadrosaurids might be possible, since they're somewhat like big cows. Large carnivores would be an absolute no, however. 
[/quote]

My thinking, more or less. After all, I seriously doubt an eight-ton predator would take the not-even-two-hundred-pound humans as more than a snack, unless it had dealt with humans that had firearms or other weapons powerful enough to hurt it. A one-pound insectivore/scavenger is definitely a lot more likely.