All the code

import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.*;

import javax.imageio.ImageIO;
import javax.swing.*;

public class Main extends JPanel {
    private static final long serialVersionUID = -1252116612041151379L;
    String[][] names = {
        {"Cat", "Penguin", "Pig", "Elephant", "Duck", "Turtle"},
        {"Cube", "Orb", "Dragon", "Bee", "Sheep", "Panda"},
        {"Raccoon", "Bunny", "Spider", "Ant", "Monkey", "Camel"},
        {"Crab", "Mouse", "Frog", "Chicken", "Wolf", "Bear"},
        {"Dog", "Hamster", "Snake", "Lizard", "Llama", "???"}
    };
    //BAD NAMES, DON'T USE
    /*String[][] names = {
        {"Cat", "Cube", "Raccoon", "Crab", "Dog"},
        {"Penguin", "Orb", "Bunny", "Mouse", "Hamster"},
        {"Pig", "Dragon", "Spider", "Frog", "Snake"},
        {"Elephant", "Bee", "Ant", "Chicken", "Lizard"},
        {"Duck", "Sheep", "Monkey", "Wolf", "Llama"},
        {"Turtle", "Panda", "Camel", "Bear", "???"}
    };*/
    int petsx = 5, petsy = 6;
    Image[][] pics = new Image[petsx][petsy];
    int oldPetWidth = 9;
    int oldPetHeight = 9;
    int newPetWidth = 36;
    int newPetHeight = 36;
    JFrame f = new JFrame("The Pet Game Project");
    public static void main(String[] args) {
        new Main();
    }
    private Main() {
        setUpPictures();
        setPreferredSize(new Dimension(450, 450));
        f.add(this);
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.setVisible(true);
        showPetDialog();
        f.pack();
    }
    private void showPetDialog() {
        setLayout(new BoxLayout(this, BoxLayout.PAGE_AXIS));
        int counter = 1;
        add(new JSeparator(SwingConstants.HORIZONTAL));
        add(new JSeparator(SwingConstants.HORIZONTAL));
        JPanel p2 = new JPanel();
        for (int i = 0; i < petsx; i ++) {
            for (int i2 = 0; i2 < petsy; i2 ++) {
                p2.add(new JLabel(new ImageIcon(pics[i][i2])));
                p2.add(new JLabel(names[i][i2]));
                if (counter % petsx == 0) {
                    add(p2);
                    add(new JSeparator(SwingConstants.HORIZONTAL));
                    p2 = new JPanel();
                    counter = 0;
                } else {
                    JSeparator js = new JSeparator(SwingConstants.VERTICAL);
                    js.setPreferredSize(new Dimension(1, newPetHeight));
                    p2.add(js);
                }
                counter ++;
            }
        }
    }
    private void setUpPictures() {
        BufferedImage pic;
        try {
            pic = ImageIO.read(new File("animals.png"));
        } catch (IOException e) {pic = null; System.exit(0);}
        petsx = pic.getWidth()/oldPetWidth;
        petsy = pic.getHeight()/oldPetHeight;
        for (int i = 0; i < petsx; i ++) {
            for (int i2 = 0; i2 < petsy; i2 ++) {
                pics[i][i2] = pic.getSubimage(i*oldPetWidth, i2*oldPetHeight, oldPetWidth, oldPetHeight);
                pics[i][i2] = pics[i][i2].getScaledInstance(newPetWidth, newPetHeight, Image.SCALE_SMOOTH);
            }
        }
    }
}