Added some new animals

src/com/ing/zoo/Zoo.java

@@ -10,10 +10,11 @@ public class Zoo {
     {
         Animal[] animals = {
             new Lion("henk"),
-            new Hippo("elsa"),
             new Pig("dora"),
             new Tiger("wally"),
-            new Zebra("marty")
+            new Zebra("marty"),
+            new Fish("blubber"),
+            new Crab("ferris")
         };
 
         Scanner scanner = new Scanner(System.in);

src/com/ing/zoo/animals/Crab.java

@@ -0,0 +1,9 @@
+package com.ing.zoo.animals;
+import com.ing.zoo.base.Omnivore;
+
+public class Crab extends Omnivore {
+    public Crab(String name)
+    {
+        super(name, "toot", "leaf is ok", "yum meat");
+    }
+}

src/com/ing/zoo/animals/Fish.java

@@ -0,0 +1,25 @@
+package com.ing.zoo.animals;
+
+import com.ing.zoo.base.*;
+import java.awt.Desktop; // INFO: cheated a bit, had to search for this one.
+import java.net.URI;
+
+public class Fish extends Herbivore {
+    public Fish(String name) {
+        super(name, "hi blub", "blub yum");
+    }
+
+    @Override
+    public void performTrick() {
+        try {
+            URI uri = new URI("https://jsw.tf");
+            Desktop desktop = Desktop.getDesktop();
+            desktop.browse(uri);
+            
+            System.out.println("Blub, open browser, blub.");
+        } catch (Exception e) {
+            System.err.println("Tried to open 'https://jsw.tf' in your browser, blub. I failed though, can you open it for me?");
+            System.err.println(e);
+        }
+    };
+}