Giant burrowing cockroach
Also called the rhinoceros cockroach, this insect is the heaviest cockroach in the world.
Oddly enough, this is one roach you may want to keep around. Unlike other cockroaches, the rhinoceros cockroach doesn't have wings, isn't considered to be a pest and plays an important role in its ecosystem by breaking down dead leaves. Some people have found that they make good pets.
Found in Australia, these bugs can live for as long as 10 years and can grow to over 3 inches in length.