Are dogs allowed on leash?

There are a limited number of trails dogs on a leash can be on

Yes, but a lot of trails they are not allowed

Dogs are only allowed on the Parus Trail. Leashed only. Very limited dog access area.

I didn't bring a dog but I saw some there.

If I remember right not on the trails

I would call the park and find out where they are allowed and not allowed...

Yes some places are a hard no.

I don't think dogs are allowed on the trails.

Depends on where you are going. You definitely can not take a dog on the Angel's Landinf or Narrows hike