• The Madagascar hissing cockroach, also known as hissers, is one of the largest kinds of cockroaches in the world, measuring 5 to 7 inches.
• Unlike most other cockroach species, hissers are wingless.
• You can usually find hissing cockroaches living within rotting tree logs. They love wood!
• They are excellent climbers and can actually climb up glass panes without any trouble.
• Even though they are big, they are purely vegetarians.
• The hissing sound is made by forcefully exhaling air through their respiratory openings on their body, much like how humans can make a sound when forcefully exhaling through the nose.
• There are three main kinds of hissing sounds; there is a mating hiss, a fighting hiss and a disturbance hiss. Only the males use the first two kinds, while the third hiss is only possible in older cockroaches.
• Surprisingly, they are very popular as exotic pets. Their hissing is what makes them so appealing!

Click play to hear what they sound like: