Page 113 - World of Animals - Deadly Predators
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Wolf spiders                                                                                                 5            EFFECTS
                                                                                                                                          FROM


                                                                                                                            SPIDER
                  Abandoning the very thing their kind            further information about the spider’s
                  are famous for, wolf spiders have               surroundings and the movement of any
                  evolved to hunt without spinning silk.          potential targets nearby.
                  These agile hunters live solitary lives and        Dull colouration provides the spiders
                  hunt like mammalian predators, using            with camouflage, hiding them against                       BITES
                  their unusually sharp eyes and quick            the leaves and soil of their habitats.
                  movement to pounce on passing prey.             Some wolf spiders conceal themselves
                  Most spiders are blind or have very             in the darkness of their burrow entrances
                  poor sight, but a wolf spider’s large           and wait for the right moment to jump                      1>Swelling
                  eyes give it vision bettered only by            out. Others sit in the open, springing                     A dose of venom delivered
                  the eyesight of jumping spiders and             onto invertebrates that come close                         though a spider’s hollow fangs
                  huntsman spiders. Sensitive hairs               enough and even pursuing especially                        will cause redness and swelling in
                  all over their legs and bodies offer            appealing prey.                                            the skin of large animals like dogs
                                                                                                                             and humans.
                                                                                       Wolf spiders don’t need
                                                                                           weapons or traps to
                                                                                               catch their prey              2>Flu-like symptoms
                                                                                                                             More serious symptoms of a spider
                                                                                                                             bite include vomiting, goosebumps
                                                                                                                             on the skin, chills, dizziness and
                                                                                                                             unusually heavy sweating.
                                                                                                                             3>Skin lesions


                                                                                                                             Spider venom can cause necrosis,
                                                                                                                             the death of the cells surrounding
                                                                                                                             the bite. In humans these wounds
                                                                                                                             usually heal, although some
                                                                                                                             leave scars.
                                                                                                                             4>Liquefaction


                                                                                                                             Luckily not a symptom
                                                                                                                             experienced by humans, the
                                                                                                                             injection of spider venom can
                                                                                                                             reduce the entire inside of an
                                                                                                                             invertebrate to mush, ready for
                                                                                                                             the spider to suck out.


                                                                                                                             5>Death

                                                                                                                             For prey animals, and for a few
                                                                                                                             unlucky people, spider bites can be
                                                                                                                             fatal. Widow and recluse spiders
                                                                                                                             are among the few capable of
                                                                                                                             posing a real threat to humans.



                                                                                                                       “Some wolf spiders

                                                                                                                       conceal themselves

                                                                                                                       in the darkness of their


                                                                                                                       burrow entrance”







                                                                                                                                                                          © Thinkstock



               © Thinkstock










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