Symptoms
The dog will suddenly act aggressively to anyone nearby, but minutes later will be calm and normal. The dog does not seem to remember or realize what has taken place and may act immediately friendly to the person(s) whom they attacked. Attacks such as these cannot be prevented with training because it is a problem that the dog seemingly cannot consciously control. [2] The attack will happen without apparent cause. [3]
Shortly prior to an attack, their eyes can glaze over and go hard, followed by the dog snapping into alert mode before finally attacking. It appears to an outsider like an exaggerated form of aggression. Often a specific dog can have a certain trigger, such as the unexpected approach of people whilst he or she is sleeping. [ unreliable source? ] [4]

Dr. Roger A. Mugford, to whom the term is attributed, [1] identified that the problem starts on average at around seven and a half months old in English Springer Spaniels. However some of his research subjects showed signs at as early as three months and as late as two years. He did find however that many dogs displayed their first symptoms on or around one of the five critical learning periods identified in dogs. These occur at six weeks old, 12 weeks old, 24 weeks or six months, one year old and two years old.

it kinda blows the old you don't get bad dogs just had owners thing .. meaning it maybe not always the owner or upbringing to blame when it comes to dogs attacking

Although the scientific evidence is limited, rage syndrome has been described as an epileptic disorder affecting the emotion-related parts of the dog's brain. [9] There is also some evidence that in at least some cases it is an inheritable genetic disorder. In English Springer Spaniels, the appearance of rage syndrome has been traced back to a winner at the Westminster Kennel Club show who went on to become a top
stud .

breeds in which it may occur. ....

Basset Hound
Beagle
Bernese Mountain Dog [7]
Border Collie
Bulldog
Chesapeake Bay Retriever
Chinese Crested
Chow Chow
Dachshund
English Bull Terrier [2]
German Shepherd
Goldendoodle
Golden Retriever [8]
Great Dane
Greater Swiss Mountain Dog
Labrador Retriever
Papillon
Rottweiler

i think some people are much the same
some of us are not so different
saying that the only dog i have seen behave that way was a golden labrador
ended with a lost finger n a trip to the vet, the owner couldn't stand to be parted from her

I was bite by a Labrador as well... 5 stitches and the nerve bit off... everyone was shocked the owner included

this dog was apparently a placid loving dog who wouldn't hurt a fly... I wasn't a fly but still

I was always chased a an evil vicious spaniel... and ppl laughed when I said they were evil little fkrs.

was a beauty, with a snap switch
god knows what it was

i don't like rat dogs, corgis terriers etc, always snappy gits
lil dog syndrome i guess