beat a dead horse
to continue to argue about something that has been settled
straight from the horse's mouth
information is gathered from the best source
smell a rat
to detect something suspicious
as sly as a fox
someone who is clever, tricky
fight like cats and dogs
to have angry arguments
curiosity killed the cat
being curious about other people can get you into trouble
Get one's ducks in a row
Have everything organized
As gentle as a lamb
to be pleasant, caring, and calm
blind as a bat
unable to see well
a busy bee
a busy, active person who moves quickly from one task to another