no idea looks like a peeping cat.....lol
the problem is that there millions of apps with notification icons. so unless it is something popular like facebook or youtube most of these questions never get an answer.
the easiest way is to ask the person that the phone belongs to because 9 times out of 10 the phone does not belong to the person asking this very question. if the phone is yours, you can just go into settings and go to notifications to find out what it is.