I am looking for something nice to put along the fence line where the dogs wear down the grass. Do you think this would be easy on their feet?

http://www.lowes.com/lowes/lkn?action=productDetail&productId=10415-286-692132&lpage=none

I have a friend who uses this in her kennels
http://www.naturesfarmacy.com/store/details.php?prodId=308&category=40&secondary=&keywords=

or at least something like it.

I use railroad ties sunk down into the ground. Keeps them from digging, looks nice and they love to run on them.

The product from lowes is basically a form to put patterns into concrete. Unless you have the manpower and ability to pour that much concrete its out of the question. It would have a good look though.

Special attention should be made to securing blocks or other thin modular pieces in that situation - I think Labs would move those quite easily.