恶人不分强壮或虚弱The wicked are not strong or weak

猫对狗说：不要以为老虎很勇猛，所以就很凶恶。 蚊子看起来很虚弱，但做恶的行为不容小觑。

The cat said to the dog: Do not think that the tiger is very brave, so it is very ferocious. Mosquitoes look weak, but the act of doing evil should not be underestimated.