A female cockroach can lay about 35 baby cockroaches at one time. Some cockroaches are born alive. When a cockroach is just born it is a nymph and it is black.
There are about 4,000 different species of cockroaches. One is the German hissing cockroach and it is famous for its loud hissing sound it makes because it is so loud that even a person can hear it hiss. The biggest cockroach in the world is the Giacinta boring hissing cockroach.