Sharks can be hatched from eggs, born live, or hatched in the womb and then born live -- if their siblings don't eat them first. Learn about shark reproduction and birth in this episode of BrainStuff, based on this article: https://animals.howstuffworks.com/fish/sharks/shark-pup.htm

How Do Search-And-Rescue Dogs Work?
10:52

BrainStuff Classics: Why Do We Drop a Ball on New Year's Eve?
05:17

Can You Really Die of Boredom?
08:16