Octopus is the largest genus of octopuses, comprising more than 100 species.
Their eggs are deposited in feces and soil. Plants with the eggs on them infect any organism that consumes them. A. lumbricoides is the largest intestinal roundworm and is the most common helminth infection of humans worldwide.
The female housefly usually mates only once and stores the sperm for later use. She lays batches of about 100 eggs on decaying organic matter such as food waste, carrion, or feces. These soon hatch into legless white larvae, known as maggots.
Most centipedes are generally venomous and can inflict painful bites, injecting their venom through pincer-like appendages known as forcipules.
Crabs are decapod crustaceans of the infraorder Brachyura, which typically have a very short projecting "tail" usually hidden entirely under the thorax
