Undead Fortitude. If damage reduces the zombie to 0 hit points, it must make a Constitution saving throw with a DC of 5 + the damage taken, unless the damage is radiant or from a critical hit. On a success, the zombie drops to 1 hit point instead.

Normalcy. the zombie appears to be a normal person except under intense scrutiny (DC 15 Insight check)

Reproduce. Whenever the zombie eats enough, it grows 'pregnant' and will burst open after 1d4 hours with a fresh zombie. both zombies are identical

Slam. Melee Weapon Attack: +3 to hit, reach 5 ft., one target. Hit: 4 (1d6 + 1) bludgeoning damage.

Create Undead. Reach 5f, one dead creature. it becomes a Zombie (2) under the control of the original zombie's master.