Bite. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 6 (1d8 + 2) piercing damage. A giant lizard can be ridden or used as a draft animal. Lizardfolk also keep them as pets, and subterranean giant lizards are used as mounts and pack animals by drow, duergar, and others.
RollQuest ships the D&D 2014 SRD as a content pack, on a 5e character sheet that does the maths - roll from the sheet and let the numbers work themselves out. Free to start.