For the best tip for ANY player is to bola it and beat it with a bat to knock it out it depends on the lvl but get around 60-100 or if you are new get a lvl 30 this has unlimited oxygen so great for oil and pearls it can't attack under water so be careful
100% melee damage is 20 base damage with beelzebufo sweep attack = 60 torpor over 10 secs. A second sweep attack within that 10 secs will only deal additional damage. 1000% melee damage will do 600 torpor over 10 secs with sweep attack :)
These oversized toads are easy to tame. All you need is a bola, tranq arrows and meat to tame them. Their food drops faster than their torpor, so you won't need that much narcotics. Be careful not to tame one if there are others nearby.