* Due to the fact that it can alter time and history and The Red Guy had been playing around with it, the Primordial Soup from the episode, Time Machine, is the reason why there are supposedly multiple Red Guys.
* Cow's birth cow was a surrogate for Mom and Dad. This is one of those universes where humans and talking animals coexist without question (a la ''ComicStrip/GetFuzzy''); Mom and Dad are animal lovers (as are their family), so they decided to have animal children instead of human children. Chicken, they hatched from an egg, but Cow was arranged through a surrogate cow - this explains Red Guy's flashback of him delivering, "Mom's baby," even though she was out in the waiting with Dad the whole time.
* In the episode "Chicken in the Bathroom", Mom, Dad, and Cow are spurting out UnusualEuphemism's for going to the toilet. Most of them make no sense (eg I need to make peace with the Germans). But Mom's euphemism "I need to resolve a family conflict" actually makes sense, because the family was conflicting (her, Dad, and Cow wanted to use the bathroom, he didn't want them to while he was in the tub, and despite being in the tub he didn't want to take a bath, but they wanted him to take a bath), and if Mom used the bathroom she could help solve it as it would be one less person who needed the bathroom and she might in the process think of something to get Chicken to take a bath. Also, Dad's euphemism that he has to "jump the gun" kind of makes sense, too, because Chicken was saying that the bathroom was off-limits until he took the bath and that the family had to wait. If Dad went to the bathroom before that he would, according to Chicken, be using the bathroom too soon and therefore "jumping the gun" as we understand that idiom to mean.
* Red threatened to wash Chicken's mouth with soup. Now soap may ''sound'' more cruel, but what if the soup used had chicken stock (or chicken broth) in it?
** This is another case of FurryConfusion: in a bumper for Creator/CartoonNetwork, Chicken confesses to eating beef when looped into Wonder Woman's lasso of truth, not to mention Cow has been seen eating poultry before. On top of that, both Cow and Chicken frequently eat pork products, whether in the form of weenies, sausages, or ham... and they have a cousin who's a sow.