3. Lori-Eating Zombie (Season 3, Episode 5: 'Say the Word')
Life in the zombie-infested prison is far from an ideal place to give birth; this is a fact, people. After Lori delivers her baby, she dies. (She doesn't have time to become a zombie because her son Carl shoots her in the head.) Then a bereft Rick tries to track the corpse down and discovers what happened to his spouse, via a Lori-Eating Zombie so stuffed that it can no longer move. An entire woman’s body in one walker's tummy. How horrific.