Cattle

Cattle were domesticated mammals native to Earth. Females were called cows. (DW: Image of the Fendahl) They were used to produce milk  and killed by humans for their meat and hide.

Encounters with cows
The Doctor and his companions and acquaintances occasionally dealt with cattle. The Eighth Doctor, Charley, and C'rizz encountered cows in the Garden of Curiosities. (BFA: Caerdroia) The Fourth Doctor once landed the TARDIS amongst a herd of cattle and facetiously asked them if they had a time scanner, to no avail. (DW: Image of the Fendahl) The Sixth Doctor and Peri witnessed the heavens open up to dump cows on the beaches of Ostend, Belgium. (BFA: Year of the Pig) When she was briefly a vampire, Nyssa feasted on the blood of a cow in the fields outside Manchester in the 1990s. (MA: Goth Opera)

Bernice Summerfield once experienced a freak time anomaly in which leather shoes were turned back into cows. However, the time anomaly only restored the cows a point shortly before they were turned into leather. Thus, the floors of the Gigamarket were littered with dead cows. (BFBS: The Greatest Shop in the Galaxy)

Dr Scotus, a veterinarian working near Cardiff, once examined a cow that had begun eating other cows, because it had been affected by an alien tapeworm which had come through the rift. (TWN: Slow Decay)

Even the Doctor's enemies used cows. Zygons once used body-print technology to take the form of cows as they were allowed to roam freely. As was necessary for the proper operation of body-print technology, the Zygons stored the real cows in their ship. (NSA: Sting of the Zygons)

Once humanity became a space-faring race, they took cows with them to the stars. As Earth's influence spread, cattle were shipped off the planet across the galaxy, such as Jadea. (EDA: Placebo Effect) Humans also brought cattle to Sarath. (PDA: City at World's End)