consistently fighting
They fight like cats and dogs.
to be very quiet
You are as quiet as a mouse.
very slow
We are moving like a turtle. You are as slow as a sloth.
to be very cold
as cold as ice
to eat making a lot of mess and noise
You eat like a pig
very pale
You are as white as a ghost.
very tall
tall as a giraffe, a tree, etc.
very big
as big as an elephant, bus, etc.