"Deep Thoughts about Pigs & Sheep" joke

Animals-Pigs/Sheep
Do you think sheep know when you're pulling the wool over their eyes?
Does the person who inventories sheep often fall asleep on the job?
If a pig is sold to the pawn shop is it then called a ham-hock?
If we make sweaters out of a sheep's hair, what do the sheep use to make sweaters?
If you can't make a silk purse from a sow's ear what can you make with it?
If you pushed a pig down a hill would he be a sausage roll?
What do pigs say when they don't want to do something? Would it be' Yea
when humans fly'?
What do sheep count when they can't get to sleep?
Why can't pigs look up into the sky?
Why do pigs have curly tails?
Why do we call them guinea pigs when they are neither from Guinea nor are they pigs?
Why don't sheep shrink when it rains?
Why is it that only pigs and humans can get sunburn?
Why is it that the first thing we try to do after killing a pig is to cure it?
Would a small pig be called a hamlet?