Lazer Cow and Chicken

/summon Guardian ~ ~1 ~ {CustomName:"Lazer Cow",Riding:{id:"Cow"},ActiveEffects:[{Id:14,Duration:999999,Ambient:1}]}

/summon Guardian ~3 ~5 ~8 {CustomName:"Lazer Chicken",Riding:{id:"Chicken"},ActiveEffects:[{Id:14,Duration:999999,Ambient:1}]}

/summon Guardian ~ ~1 ~ {CustomName:"Lazer Cow",Riding:{id:"WitherSkull",direction:[0.0,0.0,0.0],ExplosionPower:0},ActiveEffects:[{Id:14,Duration:999999,Ambient:1}]}

/summon Squid ~ ~1 ~ {CustomName:"Zombie",Riding:{id:"Zombie"},ActiveEffects:[{Id:14,Duration:999999,Ambient:1}]}