an old saying that has now become a wrong word

(1)He works like a real cow
(2)118 p
(3)I don’t think that expression is right these days
(4)No other animal works as much as a human
(5)120 p
(6)Come to think of it, people in the past let them sleep at night
(7)Humans work even at night
(8)Who’s the working animal now
(9)Afternoon, 121pm