Dogs Backpack

Dogs Backpack
Does anyone know if the state park system in oregon allows dogs on trails and in the backcountry?

I’ve been in California for the last 6 months and am disappointed by the lack of backpacking trails that allow dogs. Does anyone know of backcountry areas in Oregon where dogs either on or off leash? I’ll be moving to the Portland area.

I couldn’t find anything specifically about the back country, but here’s what the official Oregon Parks website says about pets (source 1):
“Can I bring pets to a park?
Yes. Pets must be confined by the owner, or on a leash not more than six (6) feet long, and kept under physical control at all times. You´re responsible for removal of all waste and for keeping your pet quiet during campground quiet hours (10 p.m. to 7 a.m.). Pets are not allowed in yurts, cabins, tepees or camper wagons, or on the Canyon Trail at Silver Falls.”

I also found this site about off-leash areas (source 2):
Oregon parks off-leash areas. These are listed by park or recreation area name. See the source for details.