It is a simile.
A simile is a more literal interpretation whereas a metaphor is more figurative. Lawyers are like sharks is a simile. A metaphor would be lawyers are sharks.
Metaphor: We-ell, look at the big Olympic star. Pg. 5 Simile: May-Belle was as scrawny as Brenda was fat. Pg. 95
A=B is a metaphor because "A" EQUALS "B" making it a metaphor, if it were a simile than "A" would resemble or be similar to "B".
The phrase "sly as a fox" is a simile because it directly compares Max to a fox using "as." If it were a metaphor, it would say, "Max is a fox."
The phrase "as hot as popping grease" suggests an intense heat, akin to the sizzling and bubbling that occurs when grease reaches its cooking temperature. This metaphor conveys not only the physical heat but also a sense of urgency or danger, similar to the way hot grease can splatter and cause burns. It's an evocative way to describe something that is extremely hot, whether literally or figuratively.
That would be a simile.
A simile is a comparison which uses the words "like" or "as". A metaphor is a word which does use "like" or "as". Therefore, "The surge felt 'like' the blood was rushing to your hands" would be a simile.
My bed is LIKE a cloud. A metaphor would be "My bed IS a cloud"
His eyes were a tranquil green pool, flecked with brown and gold in the sunlight (metaphor) or Her eyes were hazel like emeralds burried in dirty (simile)
As sweet as sugar or as sweet as honey.
No it is not a simile because it does not use the term like or as in its description. Were you to say patience is like an hourglass it would be a simile. The way you worded it makes it a metaphor.
"Young monkey" used as a literary term could be a metaphor or a simile, depending on the context. If it is used to compare someone's behavior or characteristics to that of a young monkey, it would be a metaphor. If it is used as a direct comparison using "like" or "as," it would be a simile.