Authorities have built a fence in the Fort Wayne area to prevent the carp from migrating from the Wabash to the headwaters of the Maumee River, a Lake Erie tributary regarded as ideal spawning habitat.

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It has built a steel fence around the woodland cottage resort at Muskoka that will receive the G8, and deployed special forces on overtime to lurk in the water and surrounding forest.

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Or built a triple electrified fence.

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Several times they evaded the police and occupied areas near a specially built perimeter fence.

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Some of the debris went over a 22-foot-high fence that was built in 2010, and some of it went through holes as the fence shredded when a car slammed into it and bounced back onto the track.

CNN: February 24, 2013 -- Updated 1551 GMT (2351 HKT)

The graveyard dogs soon returned, digging under a vinyl fence built four-feet high with three feet of wire mesh below ground.

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Some of the debris went over a 22-foot-high fence that was built in 2010, and some of it went through holes as the fence was mangled when a car slammed into it and bounced back onto the track.

CNN: February 24, 2013 -- Updated 2355 GMT (0755 HKT)

He said a secure fence had already been built at the site to stop people from using the crossing.

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Instead, the president signed a bill in October calling for a 700-mile fence to be built along the U.S.-Mexico border.

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Before the fence was built, all that separated that stretch of Mexico from California was a single strand of cable that demarcated the international border.

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