The buffalo was a large quadruped native to North America on Earth. Although once, as late as the 19th century, they existed in vast, unnumbered multitudes on the prairies, the buffalo was aggressively hunted and had become extinct by the 23rd century. (TOS: "The Man Trap")
The head of a buffalo-like creature was placed in a saloon on the Skagaran colony in the 2150s. (ENT: "North Star")
In 2266, Professor Robert Crater compared the fate of the M-113 creature to that of the buffalo. (TOS: "The Man Trap")
After Jonathan Archer restored a damaged timeline, a herd of buffalo could be seen in the time stream as the timeline realigned itself. (ENT: "Storm Front, Part II")
Vice Admiral Les Buenamigo kept a model of a buffalo on the shelf in his office aboard Douglas Station in 2381. (LD: "Trusted Sources", "The Stars At Night")