How Open Gif On Terminal From Inside The Code

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Hello mates, I am trying to open a gif image on terminal calling it from inside the code. I successfully open PNGs using the For twice, I tried add a third For loop aiming to represent the amount of frames 0 to 9, nevertheless this attempt did not work.
Code:

File, err := os.Open(path_image)
		if err != nil {
			log.Fatal(err)
		}
		defer File.Close()

		img, err := gif.Decode(File)
		if err != nil {
			log.Fatal(err)
		}

		img = resize.Resize(70, 70, img, resize.Lanczos3)

		levels := []string{" ", "░", "▒", "▓", "█"}
		
		for i := 0; i < 9; i++ {

			for y := img.Bounds().Min.Y; y < img.Bounds().Max.Y; y++ {
				for x := img.Bounds().Min.X; x < img.Bounds().Max.X; x++ {
					c := color.GrayModel.Convert(img.At(x, y)).(color.Gray)
					level := c.Y / 51 // 51 * 5 = 255
					if level == 5 {
						level--
					}
					fmt.Print(levels[level], " ")
				}
				fmt.Print("\n")
			}
		}

How could I open the gif with its frames?