Simile or metaphor they turned on themselves like a furnish wheel of fumbling spokes

Simile

Explanation:

Similes use terms such as 'like" and "as" whereas metaphors do not

what is a theme?

ans: the implicit idea of a written work of literature is called a theme.

so, the only theme of "birdfoot's grampa" by joseph bruchuc is that as a human being one should always remember the value of every life on earth.

the grampa is stopping the car again and again to save those little toads from washing away in the heavy rain is an act of kindness and humanity.