Tall Grass

Typically we have tow mow the lawn once a week and when it gets near the one week mark, the dogs begin pulling up the tall grass.  They can't stand when it gets too tall.  It's not like we let the grass get a foot tall.  Anything over 3 inches and the dogs start pulling it out.  Anytime we are outside with them, we have to constantly keep telling them to stop pulling on the grass.  If we could just teach them how to trim it evenly all over, then we wouldn't even have to mow.