Was the pterodactyl nice

Pterodactylus was a carnivore, so it wouldn't have seemed nice to prey animals such as insects, small fish, lizards, amphibians, and primitive mammals. However, it probably wasn't aggressive to non-prey animals outside of its own species. Very little is known about their social behavior, so we don't know if they would have been aggressive towards each other. In any case, Pterodactylus only had a 5 foot wingspan and wouldn't have been dangerous to any humans.