 Tagged dogfish released in Canadian waters off British Columbia were most often recaptured in the same area as released but 10 individuals were recaptured near Japan
Pacific spiny dogfish have been frequently captured over 1000 km from shore in salmon research gillnets in the North Pacific Ocean, suggesting that the trans-Pacific migrations from Canada to Japan could have passed through the open ocean rather than following the coast

The Pacific dogfish have a longer reproduction rate compared to other sharks, but have the same reproduction characteristics as "Squalus acanthias" .The gestation period for spiny dogfish is normally 18 to 24 months.Dogfish that live in cooler water may have an increased duration of pregnancy.