Leashed dogs on beaches

Are dogs allowed on most (or any) of the beaches on Cape Cod if they are leashed? What about the National Seashore Trails?

Thanks in advance.

Leashed dogs on beaches

Dogs are not allowed on the Dennis beaches from May -Labour Day. I suspect the same all over the Cape.

Leashed dogs on beaches

Here%26#39;s a page with the rules, beach by beach:

dogfriendly.com/server/travel/uscities/guide…