Impossible to determine whether it is dangling without the rest of the sentence.
The dog keeps looking behind him when walking because he is naturally curious and alert to his surroundings, checking for potential threats or interesting things happening behind him.
No, the correct sentence should be: "This pen is behind the book."
stay well behind in case they should kick out.
No reason behind it, that's just the way they stand. They may not want their arm dangling in case it distracts the player.
The correct spelling is "behind the scenes"
Try to avoid ever walking behind a horse, it had suddenly kick. But, if you ever do walk behind a horse, give it a LOT of space, and don't make any sudden movements or noises that will spook the horse.
Its recommended.
no
"Walking." When looking for a verb, look for the action.
Correct You must have both feet behind the line Correct You must have both feet behind the line
Just let him no you are there, Touch his bum and make sure he knows your going behind him/her.
It most likely is safe to walk behind a tractor. However, if someone were to walk too close behind the tractor and not pay attention to where he or she was walking, he might get his/her feet caught in something. All in all, if someone were paying attention, walking behind a tractor does not seem hazardous.