Bronto's are a beast! Make a platform saddle, have mortar and pestles on it, carry spoiled meat and you will make thousands of narcotics in no time! Also a great thatch gatherer, would definitely recommend taming the Bronto.
Just found out something really useful about Brontos! You can use them to transport goods a long way, but sometimes you have more than the bronto can carry, so, if you pack your resources on something like a high level parasaur or iguanodon, and put it on the platform saddle, it only takes the Dinos drag weight, not resource weight, allowing you to carry tons of materials at half the weight!
Who else suffers fall damage from getting down a bronto? If you do I found a good way to get off the bronto : go to the tip of its head then feed it a berry, once it lowers its head just casually walk off and sleep good tonight knowing you didn’t break your legs getting off a bronto(hope this tip helped and have a good day :)