When I encountered the massive beast I had to try multiple times and the most successful was taking 5-10 beezlbufo and have them go into battle with you, you would want to make sure that they have massive health and mele damage in order to succeed also know that most of them will die and it is not 100 percent successful and be sure to make them passive after KO this tip is not for someone who is worried about taming efficiency because it will go down a bit due to the delay of making them passive for a reference around 1000 or more mele damage each and 10000 health or more the better the frogs the less you need! Also make sure you bring a lot of prime meat or have Dino's that will give it near buy or bring lots of quetz kibble and lots of narcotics at this point you should be set. Thanks guys!
I dare you to raise one!! They are savage if you got two high lvl parents (about lvl 140ish) and you get imprinting on it. The thing will become an adult with about 230% melee and basically one chomp any bronto!!! But on the down side you loose your job and your girlfriend