Unlike dolphins, sharks are not mammals.
Sharks eat almost every type of fish, and even other sharks!
Some sharks are kept as pets.  They are the smaller sharks.
Some sharks can be trained with a LOT of work.
Some sharks eat things dumped into their habitat by people.
A baby shark is called a pup.
As soon as a shark is born, it has to swim away from its mother, because the mother will only see it as prey .