Do not make the same mistake I did! When breeding these, they only mate on water and the egg will stay on the water and cannot be picked up. During maturation, do not put them on cryopod and throw them into land, they will instantly die.
Put this up to the list so first-time tamers would know.
You will need: Argy with saddle, 30 Narcotic, Tranq darts (reccomended) or tranq arrows, 40 fish meat, 2 bolas and a safe spot to tame. Step 1: Scour the swamp for a beelzebufo. You choose the gender. Step 2: Once you find a beelzebufo you're happy with, pick it up with your argy. Step 3: Fly to your safe spot, and drop the beelzebufo. Step 4: Bola the beelzebufo, and tranq it out with; Tranq darts, (reccomended) Tranq arrows or simple, old, fists. Step 5: Give the beelzebufo your fish meat and narcotic. Feed it narcotic whenever you think you need to. Step 6: Protect the beelzebufo with your argy. Step 7: Once it's tamed, bring it to your base with your argy. Step 8: Name it, and take your extra fish meat and narcotic and put it away for future use. Step 9: You tamed a beelzebufo! Please ^ if this was helpful!
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 :)