So I guess it should be possible to get one. Starting over with a natural born whelp of one and train it should be easier, and probably work with the 'Animal Handling' skill.I think? Description Mastiffs are impressive hounds prized by humanoids for their loyalty and keen senses.
D&d 5e Mastiff can increase weight by up to five times its base transporting capacity, including the importance of the vehicle by pulling a chariot, cart, sled or wagon. The perfect dog can assist you in moving through the forest more quickly, but its initial aim is to haul the gear that would or else slow you down. Halflings and other Small Humanoids ride them as Mounts. Now you can use the warhorses ability to knock you target prone attack again with the war horse (that's only one bonus action used) then make melee attacks with your weapon at advantage, use action surge to make second attack at advantage. Halflings and other minor mortals occasionally used them as sources. D&d 5e Dog can influence anyone with their high authority, power and rapidity.