Mom is, as her name suggests, the mother of Cow and Chicken. She is voiced by Candi Milo. Like her husband, only her waist and legs are shown. She wears a white dress with red polka-dots. She, also like her husband, appears to be insane. She is known to give her children strange and random advice. She tends to be sensitive as she is occasionally.
- She uses her feet as hands, just like Dad.
- Both Mom and Dad have split torsos. Whenever the camera pans out on the couple, only decapitated legs are shown.
- Despite having no mouth and by extension, a torso, Mom is somehow able to speak.
- It's a theory that Mom and Dad are actually sliced in half seen in Powerpuff Girls: Super Smash-Up!.
- In the episode Cow and Chicken Reclining, one one scene where Chicken pulls things out of the closet, he pulls out the other halves of Mom and Dad's bodies. This is the only time we see what Mom and Dad's faces looked like, but Cow refers to it as "My science project!." Judging by this, whether the upper halves of Mom and Dad's bodies, which were pulled out of the closet, could be their actual bodies is unknown.