Misc: whose moral of the story was 'dont count your chickens before they're hatched'?

Questions

Mexico City is sinking at a rate of 6 to 8 inches a year because its built on top of what?

if a plane crashes on the border where do they bury the survivors?

voiceless it cries, wingless it flutters, toothless it bites, mouthless it mutters?

what has 3 feet but can not walk?

what is big & small?