Canine hearing is so ridiculously strong compared to ours that you could whisper from across the room and it wouldn't make a difference in terms of intelligibility. They generally move their ears to determine which direction a sound came from. They don't have all those fancy curves in their ears to help with that like we do. Of course the behavior can change with breeds that have floppy ears.
If a dog is looking straight at you, knowing which direction you're in, the ear movement is probably just excitement or a display of submission.
My dog.......
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Canine hearing is so ridiculously strong compared to ours that you could whisper from across the room and it wouldn't make a difference in terms of intelligibility. They generally move their ears to determine which direction a sound came from. They don't have all those fancy curves in their ears to help with that like we do. Of course the behavior can change with breeds that have floppy ears.
If a dog is looking straight at you, knowing which direction you're in, the ear movement is probably just excitement or a display of submission.