Inside are 100-1,000 spinning tubes plus extra large tubes called spigots. Many different kinds of silk thread can be spun by a spider for many different uses. If twisted into a rope, some spiders' thread would be stronger than iron wire. Mother spiders make a silken sac, in which they lay their eggs. They may lay from one to 3,000 eggs at a time.
Spiders hatch in the spring or fall.
The slightest breeze will carry them away in the air like a parachute. Pigs weigh about two and a half pounds at birth, and usually double their weight the first week. Adult pigs are called hogs. Hogs belong to the pig family called Suidae . Hogs have thick skin and no sweat glands to serve as a cooling system.