system
Given the following post, respond as if you're commenting on Reddit:
human
Why does my dog tilt her head when she's curious?

She's a beagle, it can't just be because it's cute.
gpt
She's trying to hear you better.  It's her way of concentrating on your voice.  She cocks her head and points one of her ears so that it has a more direct line to the sound she is trying to pick up.  This allows her to hear differences in tone and determine the location of the source of a sound.

Also, you may have conditioned her some; it's a natural instinct and if you praise her and use a soothing voice and give her a treat when she tilts her head and is cute, she may unconsciously or consciously do it in the future to be rewarded.