My neighbors dog died barking, is that normal?

I feel a little guitly as mine and theirs dogs use to bicker on at each other for ages on end. He died of a heart attack caused by the barking and literally died midway through a bark. How could this of happened?
Answers:
He didn't die from barking, he died cause he had a heart problem, and was allow to get over excited and he died.. It's the dog owners fault, he should have known the dog had a heart problem and not allowed him to argue thru the fence.. But you should also teach your dogs not to harass and bark at neighbour dogs at the fence.. This builds aggression and animosity between the dogs, and one day ( if the dog didn't die ) they get together and they scrap it out..

Edit : Yeah dogs have heart attacks, and strokes.. What makes you think dogs don't have heart attacks??

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Dogs dont have "heart attacks" i would worry about the cause if it was that sudden.

PS-Yes dogs die of heart failure, etc, but they dont have "heart attacks" like humans-they dont live long enough for plaque to build up on the arteries and break loose, causing the attack.

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yes... If it was 3am

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Hey people drop dead too, while screaming at their spouse or an idiot driver; it just happens. Stress is a factor. Could have been a stroke, too.
Don't feel guilty; you didn't cause it, sounds like squabbling with your dog was the high point of his days anyway.

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Dogs can have heart failure and go into cardiac arrest - I should know, my dog died from that but it was an effect of the cancer taking over his body. I've never heard of a dog barking to death, but I suppose if its hot enough, the age, and/or the dog worked itself up enough that it could.

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Must have made the neighbors happy! ;-)

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Did you have your hands wrapped around its neck?

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may it swallowed some substence and died suffering 2 breathe

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There could have been another reason it was barking spasticly that caused a heart attack. Drinking coffee, amongst about 100 other things a dog can eat or drink that would have the same affect. Many things make their heart just about beat out of their chests, and they get easily adjitated, and freak out, then their heart can't take it.
Please dont beat yourself up over it, there is no way you could have known it was going to happen. A healthy dog with no problems will not die from barking.

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could have been from many other health reasons like lack of care, heart worms. dental care or lack of, don't fret, you really don't know the age or history of the dogs health.