What is this animal

one day I went to a park I saw something on a grass it was insect .Then I put it in bag went got home I take it out it doesn’t fly. Then it walk around my house.My insect eat worms 1 worm=1 day. Went it have a eggs it have lot of eggs .It is a insect that had poison.Went I take it form a park I get all of family¬† 1 family =10 to 15 insect and it was little and eat other little animal and it got 6 legs. My insect name start with letter A .

Can you  guess what it can be???