The carcar has a very long taming prices of just bringing it random Dinos you can find around you, but I've found that bringing them Dinos imbeetween level 150 - 250 is very very effective due to the high level, instead of scrambling around finding any level Dino you can fing just so the carcar your taming doesn't wonder off or lose tame effectiveness, make sure to prepare yourself by only looking for carcars where you know you have seen some high level Dinos that would be good to sacrifice to a carcar. This is an extremely annoying ung Dino to tame, only if you let it be, this is a perfect Dino that most people will want as soon as they can get it, and I don't blame them, but always make sure your prepared before you attempt to tame a carcar, I have personally found this method to be very useful scoping out your area can be detrimental to your experience taming carcars.