Staff thought raiders had tried to break into their company officers when they arrived for work one morning.
But hilarious CCTV revealed the real culprit - and left employees at Argonics even more baffled.
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Greg Cappaert said: "[The manager] called the police right away and he was taking pictures and everything and then he goes and checks the video."
In the footage a "gang of goats " could be seen hanging around the business – before one decides to ram the building's glass doors.
In the footage a "gang of goats" could be seen hanging around the business
The goat returns to bash in the second pane of glass
The black and white goat banged its head on the door of the Colorado plastic manufacturing business for 20 minutes on July 16.
Greg told Daily Camera : "He must have seen his reflection in the door and thought it was another goat.
"He was trying to beat up the whole building."
First CCTV footage shows the goat bashing away at one glass pane before bringing it down with three big blows.
The black and white goat break through the second pane of glass
Once that collapses into the business the goat flees the scene but only makes it a few yards before deciding to return to create more damage.
He returns to knock in the second pane to the office building.
The guilty goat is reportedly still on the loose.