One day, calf, pig, puppy and lamb went to a convenience store together, and the cow, pig and dog were all beaten. Why, lamb?

Because convenience stores don't close for 24 hours.

This is a homophonic brain teaser. A calf, a pig, a puppy and a lamb went to a convenience store together, and all the cows, pigs and dogs were beaten. The reason why mutton is not beaten is that convenience stores don't close for 24 hours. At this time, the pronunciation of closing the door is the same as that of beating the sheep, so the reason can be explained.