Goats are domesticated animals, some of the first adopted by mankind.
Because of this status, as well as being generally awesome/adorable, the Goat has also become the mascot for RationalWiki. It has also been used as a substitute for "God" in facetious conversations, e.g.,"Goat damn it!" or "Goat bless you!" or "Goatspeed!" Tmtoulouse is known as the goat-emperor by some.