Spider Type 4====Tarantulas

In South America there is a huge spider, they can grow as big as a duck, the wire is thick and prison, so they can make webs between tree and tree, the nets are often used to catch birds. Tarantula spider is the "giant" among spider, it normally equivalent to the size of a fist( 5-15 cm ) , while four-legged Outreach body width up to 25-30 cm, the largest tarantula body length up to 25 cm long. 

Tarantulas are one of the most clever hunter. It has the unique ability to spray silk net, in the branches woven mesh with strong stickiness, once the birds, frogs, lizards, scorpions and other insects are stuck in the network, they will surely become the food of Tarantulas.

reference: http://imgfave.com/view/2822432

Tarantulas are generally more active at night, hiding in between nests or near the roots network during the day, once a prey are caught, it quickly climbed over, grab the prey, poison their prey for food. Since it is very aggressive, it is necessary for human to watch out. Tarantula spider weaving able to withstand the weight of 300 grams. In 1975, Mexico had discovered that a few branches of a tree was covered by a huge and layers of cobweb, the biggest net were 18.3-meter-high and covered 3/4 tree branches.