Answer:
Very helpful if you intend to go gently down a river.
They are toothy nocturnal immortals.
What has one head, one foot, and four legs?
Possibly the word most commonly said before taking a sip
This heavy and ancient suit was not worn with a tie, but was always worn in battle.
All about, but cannot be seen, Can be captured, cannot be held, No throat, but can be heard. Who am I?