PImage wolf1, wolf2, wolf3;
float frame = 0;

void setup(){
  size(1024,683);
  wolf1 = loadImage("wolf_test1.png");
  wolf2 = loadImage("wolf_test2.png");
  wolf3 = loadImage("wolf_test3.png");
  background(wolf2);
}

void draw(){
  //blend(wolf1,0,0,width, height, 0, 0, width, height, SCREEN); 
 image(wolf2, 0, 0);
 frame+=1.5;
 if (frame > 150){
 println(frame);
  tint(255,255,255,frame-150);
  image(wolf3, 250, 166);
 }
 }