As hard-working as a ...
bee
As chatty as a ...
parrot
As brave as a ...
lion
As friendly as a ...
puppy
As quiet as a ...
mouse
As clever as a ...
fox
As strong as an ...
ox
As dumb as a...
sheep
As stubborn as a ...
mule
As cowardly as a ...
chicken
As wise as an...
owl
As lazy as a ...
sloth