Cattle

Cows are big dumb four-legged mammals that go "moo". They are members of the bovine family and are ideal for yielding meat products in the form of beef and veal and dairy products in the form of milk. Male cows are called bulls while female cows are called heifers. Their young are called calves. In Hindu culture, cows are considered sacred because they give milk and it is considered a sin to injure or kill one. Killing a cow in India will earn you a longer stretch in prison than killing a human.

Film
In the 2012 sci-fi comedy film The Watch, four members of the Glenview, Ohio Neighborhood Watch named Evan, Bob, Franklin and Jamarcus discovered alien technology capable of producing a bright death ray. They experimented with the device on an unsuspecting cow, reducing it to first a skeleton and then to ash. Bob in particular was impressed with the machine's capabilities, citing "Sucks for the cow, but that was awesome!"

Television
On the TV series Planet of the Apes, a family of chimpanzee farmers raised cows in a small community. Per the ancient custom of their people, a chimp could not become a farmer in his own right until his cow has sired a bull. A young disgruntled farmer named Anto was particularly irritated when his cow gave birth to only heifers over the course of five years. The humans, Alan Virdon and Peter Burke begrudingly helped Anto's cow with her next birth, which produced twin bulls, which was very fortunate for them as the irate farmer was prepared to kill them if the situation had turned out any other way.

On the 1980-1983 ABC comedy series Too Close for Comfort, cartoonist Henry Rush (Ted Knight) created a comic strip called "Cosmic Cow". While drawing his strip he used a Cosmic Cow puppet to hold his pencil and often spoke in her voice while crafting his dialogue. On one occasion, the puppet turned up missing, so Henry was forced to use a sock in place of her, which yielded severe writers' block for him.

Comics
In the Marvel Comics title Fantastic Four, the alien race known as the Skrulls came to Earth and began paving the way for eventual conquest by using their shape-changing abilities to tarnish the reputation of New York City's resident superhero team, the Fantastic Four. Scientist Reed Richards - leader of the group defeated the Skrulls by hypnotizing them into shape-shifting into normal Earth cows with no memory of their previous existence. Years later, the milk provided by these Skrull cows began having dire consequences for those who drank it.