Why would you possibly want to do that, you might ask? Well, a practical reason would be in testing a mod. But the more likely reason is for nostalgia, since this was the standard behavior in Minecraft 1.2.5 and earlier. There's a distinct difference in walking through a bunch of items and hearing the rapid item collection sound, as opposed to picking up a couple or so item stacks. Some people found the older method more rewarding when mining, which this brings back.

As of v1.1, you can type /toggleitemgrouping into the console to toggle this behavior.

This mod adds two new machines and some items:

Two machines:

• Animal Ingredient Extracting Machine - Can extract animal ingredients.
• Animal Research Machine - Use the animal ingredients spawns animals.

New item:

• Mushroom's mushroom - It is Mushroom drops.It is used for extracting ingredients.
• Horsehide - It is Horse drops.It is used for extracting ingredients.
• Villager's hair - It is Villager drops.It is used for extracting ingredients.
• Pig ingredient - It is used for spawning pig.
• Sheep ingredient - It is used for spawning sheep.
• Cow ingredient - It is used for spawning cow.
• Mushroom ingredient - It is used for spawning mushroom.
• Horse ingredient - It is used for spawning horse.
• Villager ingredient - It is used for spawning villager.
• Rabbit ingredient - It is used for spawning rabbit.
• Chicken ingredient - It is used for spawning chicken.

Machine recipes:

Animal Ingredient Extracting Machine:

           Stone                                     Stone                                          Stone 

Block of Redstone               Block of Diamond                    Block of Redstone

           Stone                                     Stone                                          Stone 

Animal Research Machine:

           Stone                                     Stone                                          Stone 

Block of Redstone               Block of Emerald                      Block of Redstone

           Stone                                     Stone                                          Stone 

Machine instructions:

Animal Ingredient Extracting Machine:

First, place the Animal Ingredient Extracting Machine on the floor, and then open the Machine GUI. You can see three slots in it. Put animal ingredients in to the top slot.Please looks the following table of comparisons: 

• Pig ingredient - Porkchop
• Sheep ingredient - Mutton
• Cow ingredient - Steak
• Mushroom ingredient - Mushroom's mushroom
• Horse ingredient - Horsehide
• Villager ingredient - Villager's hair
• Rabbit ingredient - Rabbit meat
• Chicken ingredient - Raw chicken

Then put diamond in the under stack.

Animal Research Machine:

First, place the Animal Research Machine on the floor, and then open the Machine GUI. You can see three slots in it. Put 32 animal ingredients in to the top slot. Put emerald in to the under stack. Then the machine begin working.When the bar go to end, the animal on this machine is spawned by machine.

Bikes
Ender Dragon Bike
Chinese Dragon Bike
Iron Golem
Reindeer Bike
SnowGolem Bike
Notch Bike
Cow Bike
Ender Bike
Pig Bike
Sheep Bike
Spider Bike
Chicken Bike
Squid Bike
Wolf Bike
Creeper Bike
Pony Bike
Ghast Bike
Dino Bike
Bunny Bike
Chocobo Bike
Silverfish Bike
Bat Bike
Slime Bike
Ocelot Bike

This Mod adds:
Sharks NEW!

Piranhas NEW!

(Tropical) fish

Whales
Spoiler (click to show)

Manta rays

Anglerfish

Birds

Insects

Mice

Lizards

Snakes

Penguins

This is a revamped and expanded version of Greg's Blocks for Minecraft 1.8. As well as sloped roofs, you can now have blocks sloping in any direction, create round corners, arches, and other rounded structures, and give your windows nice-looking frames.
 

ArmorStatusHUD displays your currently equipped armor and held item along with the durability remaining without having to open your inventory!

Watch your arrows fly through the air to hit their target! (Or not.) Just hold the C key while shooting an arrow to start the camera.

AutoSwitch is a mod that automatically switches to the correct tool when mining a block and automatically uses the correct weapon when attacking a mob or a player. It will also switch back to your previous item when you are done mining or attacking a mob, useful for building and going on mining trips.

AutoSwitch won't just pick the fastest tool, it also takes into account other factors such as enchantments.

You can turn AutoSwitch off and on using the F10 key. If you don't like F10, you can change it to something else in the options window.

Check out: Cow, sheep, pig, wolf, chicken. You have to spawn at least 2 of everything at to see the babies (every baby need a mom!).