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Item Number: SCP-123456
Object Class: Safe
Special Containment Procedures: SCP-123456 is to be contained in Area-██. Area-██ is to have a metal fence surrounding the 500 m^2 it encompasses, and this fence is to be monitored weekly for damage. Area-██ is to have its grass levels monitored and replenished when needed. Area-██ is installed with a sprinkler system that is to be maintained weekly in order to ensure a steady supply of grass for SCP-123456 instances. Access to SCP-123456 instances is limited to Level 3 or above staff except when permission is granted from a superior officer.
Description: SCP-123456 is a group of anomalous cows discovered on a farm near █████, Wales. SCP-123456 has the ability to create different types of milk based upon the subject’s color.
Addendum: List of known SCP-123456 instances

Designation Color of Cow Milk1
SCP-123456-1 White Identical to milk from a non-anomalous cow except for containing 20% more calcium.
SCP-123456-2 Brown The milk is brown, slightly thick, and has a sweet, chocolate-like taste. No notable effects that would not occur when consuming store-bought chocolate milk.
SCP-123456-3 Black The milk is a dark black, and has a strong, repulsive taste. Chemical analysis has shown large amounts of feces in the milk, along with extensive microbial colonies.
SCP-123456-4 Red The milk is type O- blood, but is unable to coagulate. When excreted, it is completely sterile. It is not permitted for medical use due to an anomalous compound causing the blood to spontaneously combust when in contact with some parts of the human brain. Further testing ongoing.
SCP-123456-5 Green There is no milk. When the udders of SCP-123456-5 are milked, sharpened blades of grass rapidly shoot out of the udders, ears, mouth, and anus of SCP-123456-5. These blades have proven sharp enough to penetrate thin clothing and cause papercuts.
SCP-123456-6 Rainbow Pattern The milk changes color rapidly, going across the visible spectrum within 1 second. When more than 250 mL is consumed, the drinker will begin to convulse rapidly before launching upwards at a velocity of over 400m/s. In addition, 1 in 100 subjects will [REDACTED] before they are able to launch, leading to their body expanding and eventually [REDACTED].
Footnotes