How do you say walking the dog in Greek?

The most straightforward way to say "walking the dog" in Greek is:

βγάζω τον σκύλο βόλτα (vγάzo ton skýlo vólta)

* βγάζω (vγάzo): I take (out)

* τον (ton): the (masculine accusative - used before "σκύλο")

* σκύλο (skýlo): dog

* βόλτα (vólta): walk/stroll

You could also say:

περπατάω τον σκύλο (perpatáo ton skýlo)

* περπατάω (perpatáo): I walk

* τον (ton): the (masculine accusative)

* σκύλο (skýlo): dog

The first option is more common and natural-sounding.