♦ So here is the ultimate trolling... You can troll your friend while he want to make little bunny's

♦This tutorial will show you how to blow up rabbits or any animal :)

♦Step 1: you need a clock running

♦Step 2:Than you need a scoreboard objective:
/scoreboard objectives add rabbits stat.animalsBred rabbits

♦Step 3: You need 3 command blocks attached to the clock, the first command block will have a comparator which will send an output to the 2nd command block than the 2nd command block is linked to the 3rd one via a repetor

♦Code:
1st command block: /testfor @a[score_rabbits_min=1]
2nd command block:  /execute @e[type=Rabbit] ~ ~ ~ /summon Creeper ~ ~ ~ {Fuse:0,ExplosionRadius:1,ActiveEffects:[{Id:14}]}
3rd command block:  /scoreboard players set @a[score_rabbits_min=1] rabbits 0

♦Explanation :
The first command block will test if your score of stat.animalsBred went up to 1  and when it went up to 1 will send a signal to the 2nd command block which will execute a command to all the entitys which are type Rabbit  and will summon to the a Creeper which will explode imidiatly with a radius of 1

♦Video here : click here