I made these window bars (good use of 5 years of engineering school back in the mid 70’s, no?) from a dowel and a 1×1 years ago when our rat terrier Suzie would get up against the screen of an open window and bark, growl, and flash teeth. One time the mail carrier was delivering a package and she told us she felt threatened by Suzie’s aggressive display, saying it seemed like to dog could go right through the thin bug screen. So I made these bars. Problem fixed.
A memory of Suzie who passed about a month ago. Her bars are still in use.
While waiting on someone (my white jeep is reflected in the windows of the purple car) I heard a long and deep howl. I got out to look, and this beautiful purebred black lab was howling. Likely a bit of separation anxiety as his people left him for a few minutes in the car (it was a cool day). I walked over and petted him, then took his photo as he stared in the direction the people went.