@tanza:
Is this the puppy that was staying with your Mom till you moved? She was also having problems with him correct with escalation aggression?
At 5 months I would say this is a real problems be it aggression or neurological.. and as Lisa said would need to see a specialist asap…. I would also agree that it is most likely a neurological disorder... and while it doesn't sound very nice, the kindest thing you might be able to do for this pup is to have him put to sleep.
Ditto. I feel that seizure related aggression is really very, very rare, and often over diagnosed. I think this pup is just seriously aggressive. The freeze and zoning out is probably a predatory freeze before attack. Not a seizure. Often dogs freeze and their eyes roll back right before they cross the threshold to attack…and it sounds to me like this is what this dog is doing.
Personally, I think it would be completely irresponsible to place this dog with anyone else...and if it were mine I would euthanize ASAP. There are way too many sweet, loving, sound dogs out there than need homes to try to (perhaps futiley) rehab this one.