Labrador Breaks Out of Kennel
	
	
		I have a yellow Labrador (which stays with my parents) and he is always extremely anxious to get out of his kennel while anyone is outside.  He barks constantly and will even grab onto the kennel door and pull.
Today he actually pulled the wire back and was able to escape his kennel.  My dad and I had to replace the kennel door.  It's like a chain-link kennel.
He is ran daily for at least an hour.  And we have tried using a corrective collar, but he knows when it is on and doesn't attempt to break out.  I was hoping that some one here would have a suggestion to help break him of this habit.