I'm also thinking thyroid, though it doesn't sound like there are any other symptoms, I'd still want to rule it out.
I would also check for neck/spinal trauma. Dogs can definitely hit the end of a line hard enough to do some damage to themselves.
I've seen a dog's personality change overnight due to a difficult-to-diagnose neck injury (caused by chaining). After surgery he was his sweet self again.
There are also some brain tumors and I think thyroid problems that cause sudden aggression.
Vet first, then trainer...
What Aron said about phobic reactions to pain...
What Aron said about tying up a dog is really important. Even sweet dogs can become weird when tied, exciting things passing by that they can't reach. Somehow it's much worse than being in a yard with excitement beyond the fence.
Uhhh, i'm thinking the dog is 20 months old and maturing. The medical thing not so much..... What's "suddenly" to one person may be apparent for awhile to another person.
Reg: 03-03-2002
Posts: 178
Loc: Pocono Mountains, Pa
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Quote: Michael_Wise
Quote: Roger Kutzler
What are you feeding and how much protein is in his diet?
Fo' real?!
Years ago (I'm talking 35 or so) it was believed excess protein could cause some aggression. Later there was some research that seemed to support this. I never really followed up because I don't feed super high protein foods and never had an issue.
Excess protein can affect thyroid levels.
This dog needs to have a good physical to rule out an organic issue.
The only thing needed for evil to exist is for good men to stand by and do nothing!!!
Reg: 07-13-2005
Posts: 31571
Loc: North-Central coast of California
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Quote: al curbow
Uhhh, i'm thinking the dog is 20 months old and maturing. The medical thing not so much..... What's "suddenly" to one person may be apparent for awhile to another person.
Robert, a trainer one on one is the key for you!
And whole other topic, please do NOT combine raw and kibble. But take it to a new thread if you want to ask about that, please. Thanks. "While I don't think that diet is a factor in this dog's issues, I will say that raw and kibble should never be combined." is absolutely right.
Quote: al curbow
... Robert, a trainer one on one is the key for you!
I also think the trainer is the way to go, but I still think the first stop should be the vet....most trainers first question will be...."You have had the vet check to rule out physical causes?"
I think that the most likely thing is that the ramp up signals are being missed...it's easy if they are subtle and you are not used to looking for them.
I have had experienced dog owners miss the signs..all it takes is a few sessions to educate the owners and they are off and running.
Even experienced people sometimes need another set of eyes and a new perspective.
I am always running things by a K9 handler friend of mine...even when I think I have the solution...its just better to have two minds ans eyes on a problem.
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