Can we bring a dog in a hiking trail?

Yes you can. There are a lot of rocks. And he has been hiking with you before. Not a good idea for a dog that never has hiked before.

Yes

Yes, you can do it.

I saw dogs on the summit. Probably need to be very fit. 6,288 ft above sea level.

Don definitely has a good point. Mt. Washington isn't just some normal neighborhood trail.

Yes you can.

Yes I beleave you can

It's super beautiful the view from the top, I recommend it restore at the top

Yes. Why not