The sly feline hides its claws

Busy as a beaver

No room to swing a cat

Extremely reckless

Fluid; Ever-changing

Loitering about town

①Covering up something bad you did ②Trying to swipe something that isn't yours

Everyone and their mother; Every Tom, Dick and Harry

To act like butter wouldn't melt in your mouth

Mice are the agents of Daikokuten

To open a can of worms

fabrication

a large unruly mob

All the time; 24/7

Like shooting fish in a barrel

Up late and up early

Hold a grudge

Nirvana

serenity from enlightenment

Tone-deaf

to lick

Thorough; Meticulous

A shock

Persian silk tree