Russian Blue Cat

I didn't know we had this breed type of cat at home until my cuz told me it is a Russian Blue Cat. For me a cat is just a cat..hehe..kuchring yang ada amprat batis..hehe..nya kazen ku kucing jenis ani pintar..owh patut tah kucing ku ani keraja nya hari2 menyambangi and menangkap burung..well..dats wat cats do..but according to him, my Russian Blue cat is a darker one while he has a lighter one..n jua I noticed jenis kucing ani a bit anti social and aggresive...