to remain silent or hold oneself aloof in a sullen, ill-humored, or offended mood: Promise me that you won't sulk if I want to leave the party early. a state or fit of sulking. sulks, ill-humor shown by sulking: to be in the sulks. Also, sulker. a person who sulks.
Some cite the fact that secretions from the millipede repel other insects as a reason why they are beneficial. While millipedes do not bite, the sight of them can still be unnerving, especially when they appear in large numbers. They have the ability to crawl up walls and enter homes through small openings.
Quick Answer. Although walking stick insects do not have a venomous sting or bite, some species can discharge a milky acidic spray from glands at the rear of the thorax. They can spray it accurately at predators at a range of up to two feet. Continue Reading.