Hmmmm, well...it should keep in/out dogs....if they are too large to fit through the openings....and too fat to jump it. 4 ft isnt that tall...Are you planning to use it with poles...or T posts?? We used something similar for our back tard/dog area....but put wooden posts...and then the fence...
This fencing is GREAT, for cattle....sheep....maybe even hogs....but for chickens..and thier safety?? No. The openings in this fence is I think 3 or 4 INCHES. Big enough for a young hen to fit through, and definately big enough for most predators. Hope I didnt burst your bubble on this one.