How Do Insects Stick To Walls. For smooth surfaces, the bug has many small pad like things (technical term) these create a vacuum and keep the bug on the wall. The previous answer isn't entirely correct;
Walking sticks have suction cups and claws on their feet which enables them to wall up vertical surfaces and upside down.
Australian stick insects range in size from a few centimetres long to the longest species; Each foot has a sucker and also two sharp claws, allowing them to walk up vertical walls and even upside down. Stick insects are known mainly for their camouflage, but they have other stick insects are unique exotic pets due to their camouflage appearance and ease of care. Oak, rose, and hawthorn are the primary leaves eaten by.