11:26 AM CDT on Thursday, May 4, 2006

By STEVE STOLER / WFAA-TV

Surveillance video captured images of a goat ramming the glass door of Hickey Elementary.

PLANO — An unexpected visitor suddenly showed up at a Plano elementary school and broke inside.

All was quiet at Hickey Elementary Sunday until a surveillance camera caught images of a goat on the premises butting heads with a glass door.

"Being a male goat, they're kind of territorial," said Jim Dunlap, PISD outdoor learning center. "If they see another male goat, they will try to establish some sort of domain and they will butt heads."

The goat's horns rammed into the glass more than two dozen times until he broke through the glass.

Dunlap said he believes the goat saw his own reflection in the glass and tried to ram what he thought was another goat.

"This goat could see his entire body, and consequently, in his little goat mind he figured that's another goat," Dunlap said.

Another surveillance camera caught the curious goat casually strolling along the cafeteria windows. The goat eventually shattered more glass and wound up inside the school, where animal control officers caught him.

He is now being held at the district's outdoor learning center.

"If you brought another male goat in here right now and opened that cage, they would butt heads," Dunlap said.

E-mail sstoler@wfaa.com