New command:
 /nbt toggle pet sitting To be used on dogs and cats (tamed and untamed)
 /nbt toggle wolf anger to be used on untamed wolves (untamed)
 /nbt set cat type CAT_TYPE to change a cats type (tamed and untamed)
 /nbt set wolf collar color (Commented out but there for those who want to build the source themselves, it does have some issues though)