I found this on Mickey News:
Missing since November, the beloved dynamite-chewing goat on the Big Thunder Mountain Railroad roller coaster is expected to wander back to his exposed butte in the next few weeks, according to Disneyland officials. The extended and unexplained disappearance fueled speculation on Internet chat rooms about the bleating goat's demise and led to more than a few instances of baa-baa-bad humor.
Officially, the nameless, genderless goat is "on vacation." Unofficially, the audio-animatronic animal is getting a new fur coat in the Anaheim theme park's maintenance department after years of exposure to the wind, sun and rain.
Disney fans fondly recall the legendary "goat trick" — where riders at the crest of the second lift hill train their eyes on the goat throughout the subsequent sharp turn to greatly increase the sideways G-forces.
My 7-year-old daughter, Hannah, worries about the death-defying creature's fate as she waits impatiently for the "goat ride" (as she calls it) to return to its full and explosive glory. In the meantime, Hannah bides her time on the "a-bob-di-bull snowman" ride (a.k.a. Matterhorn Bobsleds roller coaster).