Here is a list of some insects like.
- Bed bug
- True bug
And there is lots more insects
Some insects are small or big or also have wings
The can be dangerous and bite humans like mosquito ,they drink blood from humans and they can also fly
here is a video how mosquito drinking blood from a human body.
Most insects have a vertebrate ,vertebrate is a animal that do have a back bone example like:Humans ,ant,mosquito, butterfly and lions and lots more other animals