I have a 13mo JRT and I'm beginning to hate being around him, as horrible as that sounds. I do everything I can for him and he's trained in that he knows 'sit', 'stay', 'paw', 'leave it', etc. I know that he knows commands and he certainly understands 'no!' but it makes him angry and more hell bent on whatever he wants. He was socialised from a young age and we really tried to do everything by the book.
His latest thing is his toys. For the past few months, from the second he wakes up in the morning until he goes to sleep at night he wants to play. If I'm not at work, I'm with him and he brings me toys, drops them in front of me and growls until I throw it for him. When I say he can growl and bark at me for twenty minutes without giving up, I swear I'm not joking or exaggerating. It's constant. All day, every day. I'm exhausted and actually can't stand having him in the room with us because he doesn't let up.
I tried hiding all of his toys when he's in the living room and he becomes aggressive, ragging on the bottom of my trousers every time I stand up or chewing on my hand, snarling. He turns from angelic to hellbeast in an instant but nothing seems to cause it. He was neutered at 7mths because his testicle was wandering around in his belly and the vet said that it could twist, but even the operation hasn't calmed him down.
I've looked at training groups but there are none nearby (I don't drive) and one-on-one training is really expensive. I don't know what else to try but something has to give.