Sheep Sheep were quadruped mammal s found on Earth and domesticated by human s . They were raised mainly for meat ( called mutton ) and wool . An immature sheep was called a lamb , as was the meat from such young sheep . Earth sheep . The Doctor , his companion s and acquaintances occasionally encountered sheep . At least one sheep actually came to inhabit the TARDIS — however briefly . In 3300 BC , a wounded sheep entered the ship , where it gave birth to its lamb . The Second Doctor left to find the sheep ' s owner , but when he returned he found the sheep and lamb brutally slaughtered . ( PROSE : " Loop the Loup " ) Some companion s had at least some level of knowledge about sheep herding . According to one account , which may have been a dream , Jamie McCrimmon stopped travelling with the Second Doctor to become a shepherd in Yorkshire after Zoe Heriot went into a coma . ( PROSE : " Dream a Little Dream for Me " ) Dog s were integral to sheep herding . In fact , Peri Brown once noticed a herd of sheep running down a dog on the island of Dorsill , which made her think that something was amiss on the island . ( PROSE : " Grave Matter " ) The disappearance or death of sheep was often an indicator of much bigger trouble . The Seventh Doctor and Ace initially went to the town around the Graystairs Alzheimer ' s disease treatment centre to investigate sheep disappearances . ( PROSE : " Relative Dementias " ) On another occasion , in the Welsh village of Llanfer Ceiriog , they saw a sheep being taken by a wolf . ( PROSE : " " ) . In 1936 , Harry Sullivan was falsely accused of being a werewolf who attacked an English village ' s sheep population . ( PROSE : " Wolfsbane " ) During his time in the Death Zone , the Master tricked several Cybermen to their deaths when they walked through one of the obstacles in the Tower of Rassilon . When Tegan Jovanka felt this was ruthless even by his standards , he compared it to when humans drive sheep across minefields during wartime . ( TV : " The Five Doctors " ) During the 1980s , Tegan Jovanka ' s father owned a sheep farm near Brisbane , Australia . ( AUDIO : " The Butcher of Brisbane " ) In the 21st century , Ianto Jones and Jack Harkness encountered a dead sheep close to the village of Monknash . It was remarkable because it was completely devoid of insects . Indeed , it was perfectly undisturbed by any scavengers . Having broken free of the normal cycle of death and decay , the sheep was a clear sign of problems yet to be uncovered in Wales . ( AUDIO : " The Sin Eaters " ) In 2050 , K9 Mark 2 briefly saw a sheep in the dream he shared with Alistair Gryffen . ( TV : " Dream - Eaters " ) Biology . Sheeps were herbivore s . They had different teeth . They had incisor s , which were used for cutting up food . Their molar s were used for grinding up food . The sheep used it for chewing grass . Their pre - molar s were used for chewing food . Sheeps ate vegtables . ( WC : " Teeth and Eating " ) By - products . Sheep were raised in part for their meat . London ers were definitely known to eat mutton as early as 1814 , when Vicki Pallister ran across a mutton vendor in the streets . ( AUDIO : " Frostfire " ) Various religion s sacrifice d lambs to their gods . Rose Tyler and the Tenth Doctor once witnessed the Roman Ursus offering a lamb to the goddess Minerva , as well as Minerva ' s reception of the blood of the lamb . ( PROSE : " The Stone Rose " ) Occultists believed that the entrails of sheep might have prophetic power . When the Third Doctor failed to understand the importance to UNIT of finding , the Brig quipped that the Doctor might wish to take his time reading sheep entrails before focusing on the important matters at hand . ( TV : " The Time Monster " ) Areas of farms dedicated to collecting sheep waste were called " sheep dip s " . Distracted by discussions he was having with Rory , the Eleventh Doctor twice landed in a sheep dip that was close to where the TARDIS had landed . ( PROSE : " The Glamour Chase " ) Extinction . According to one account , sheep became extinct around 2106 after the Ozone Purge , though records of their existence survived . ( PROSE : " Lucifer Rising " ) However , this extinction was likely reversed on Earth or did not happen , since sheep were known to have survived in human colonies off Earth . ( TV : " Planet of the Spiders " ) Extra - terrestrial sheep . The colonists to Metebelis III brought sheep with them . The sheep survived the crash of the colonists ' ship , and later became a food source for the colonists and the Eight Legs , though the Eight Legs preferred human meat . ( TV : " Planet of the Spiders " ) In the far future on Kirith , the Panjistri kept sheep on Kandasi Island as their main source of food . ( PROSE : " " )