I know how to make dog now

// Where is the circle
let x, y;

function setup() {
  createCanvas(600, 470);
  // Starts in the middle
  x = width / 2;
  y = height;
}

function draw() {
  background(20);
  
  // Draw a circle
  stroke(50);
 fill(10, 255, 68)
 ellipse(x+98,y+100,100)
ellipse(x+55,y+60,45)
ellipse(x+135,y+60,45)
        fill(0,255,150)
ellipse(x+135,y+100,35) 
    fill(0,255,150)
ellipse(x+100,y+100,35)
    fill(0, 189, 35)
ellipse(x+120,y+125,15) 

  
  // Jiggling randomly on the horizontal axis
  x = x + random(-1, 1);
  // Moving up at a constant speed
  y = y - 1;
  
  // Reset to the bottom
  if (y < 0) {
    y = height;
  }
}