I found this pikachu but it wont let me catch it help please.?

one day i was playing in my backyard and then i stumbled along this yellow object. it started moving and it looked like a pikachu! i tried catchign it but when i threw the rock the pikachu fell unconscious. when it woke up it started scratching me i grabbed a chicken and smacked it. then the pikachu used iron tail. i broke through the neighbors window, and i got sewd. the pikachu is still there. how can i catch it? please help. this is in feel life btw. crack....need more...