I already posted once, but I had just had my husband read this post.  He immediately went to the garage to measure.  Keep in mind we just had our brand new garage door installed 2 months ago.  The sensors were set at a towering TEN INCHES HIGH!!!  

  Both my dogs and any child could have ended up under that!!  He moved it himself and could only get it down to 7 inches.  We measure the pups, and it should be okay now.  But we'll call the garage people to see what they say.  So, as you read this, don't "assume" yours is okay.  Please go measure!! 
I don't know if Fozzy will return to YT after this warning, but we never would have dreamed of measuring the sensors had they not posted about their tragedy.