For the time being both the geckodragons and the catcranes will be extremely wary of people, while the rhinobears will be incredibly rarely sighted. In future the geckodragons may be more responsive (or more likely apathetic) to contact, but getting a catcrane to tolerate even being close to a person would take a very, very long time filled with lots of positive reinforcement.

The rhinobears cannot be domesticated, and we would not advise any characters try - they would likely lose a limb, if not more.