Albertosaurus

Adept Smell. The Albertosaurus knows of any creature within a mile of it, and can make out simple details about the creature including size, strength, danger level, and what it ate last. It also had advantage on Wisdom (Perception) checks that rely on smell.

Sneaky. The Albertosaurus has advantage on Dexterity (Stealth) checks made to hide from or sneak up on its favored prey. In addition, the Albertosaurus makes no noise when it moves unless it chooses to. If it hits a surprised target with its ram, crunching bite, or bone-breaking bite, the attack does an additional 2d12 damage. Hitting with ram means the target failing the save.

Favored Prey. The Albertosaurus does an additional 2d4 damage to its favored prey, has advantage on Charisma (Intimidation) checks against them, has advantage on Dexterity (Stealth) checks made to hide or sneak up on them, and they have disadvantage on the bone-breaking bite's saving throw. Its favored prey are: Gallimimus, Struthiomimus, Carnotaurus, Scorpiovenator, sauropods, Edmontosaurus, Parasaurolophus, Torosaurus, Triceratops, Ankylosaurus.

Aggressive. As a bonus action, the Albertosaurus can move up to half its speed toward an apex or favored prey that it can see.

Sauropod Slayer. The Albertosaurus deals an additional damage die to sauropods, and takes 10 less damage from them.

Armor Piercing. The Albertosaurus ignores damage reductions (Other than immunities) for its crunching and bone-breaking bite. If the target of its crunching bite is wearing non-natural armor that has a bonus higher than +2, reduce the bonus by 1 for the crunching bite.

Ferocious. If the Albertosaurus deals more than 35 damage with a bite attack (Any kind), the target must succeed on a DC 22 Intimidation "save" or be frightened. A frightened target must also succeed on a DC 16 Constitution saving throw or take an additional 1d6 -1 damage.

Multiattack. The Albertosaurus attacks twice when it takes the attack action on its turn, or it uses bone-breaking bite or ram.

Bite. Melee Weapon Attack: +11 to hit, reach 5 ft., 1 target. Hit: 35 (8d6 + 7) piercing damage.

Crunching Bite. Melee Weapon Attack: +11 to hit, reach 5 ft., 1 target. Hit: 28 (6d6 + 7) piercing damage and the target's movement speed decreases by 10 feet, to a minimum of 10 feet after the reduction. The movement speed reduction lasts until the end of their next turn.

Bone-Breaking Bite (Recharge 2). Melee Weapon Attack: +8 to hit, reach 5 ft., 1 target. Hit: 20 (2d12 +7) bludgeoning damage plus 20 (2d12 + 7) piercing damage and the target must succeed on a DC 20 +1/2 of their con save modifier Constitution saving throw or have their movement speed halved, take 7 (2d6) bleed damage at the end of each round for 2 rounds, and take 13 (2d12) bleed damage at the start of their next turn.

Stomp. Melee Weapon Attack: +11 to hit, reach 5 ft., 1 target. Hit: 22 (2d12 +9) bludgeoning damage and the target must succeed on a DC 24 Strength saving throw or be knocked prone. A creature that was already prone when hit with this attack must succeed on a DC 12 +1/2 the target's con save modifier Constitution saving throw or be knocked unconscious.

Ram. The Albertosaurus charges at one large or larger target within 5 feet of it. That target must succeed on a DC 18 Strength or Dexterity saving throw or take 60 (5d12 + 27) bludgeoning damage on a failed save, or half as much on a success. A target that fails by 2 or more is also knocked prone.