Commanding/Leading/Giving targets to pets

A command or a block to make your pet do something else then following or just sitting, maybe a food bowl? You will connect a single pet to it, and it will stay around it all the time, qould be good for making your dogs and cats more effective to defend your place aganist skeletons and creepers, maybe even making cats chase creeper? Or dogs attacks zombies too after giving them a specific item/food? Like; you give your wolves enchanted golden apple, and connect them to a food bowl in front of yuur house and they will guard the enterance from zombies and skeletons?

And now it came to my mind, if we could send a pack of wolf to hunt and they would return with meat, leather or wool they got from their prey, it would be reaaaaaly cool.