Yes, dogs are allowed. However, I'm not sure how many you might have.

After talking to the campground by phone the Ranger said no pet limit as long as they remain on a 6' leash and do not bother other campers at any time.

Dogs are allowed. Not sure if there is a limit.

Dogs are allowed. The state parks website says that only two dogs are allowed in yurts and cabins and there are some beaches that restrict dogs due to nesting birds. See https://stateparks.oregon.gov/index.cfm?do=v.page