Hi, and welcome to YT!
I'm afraid I can't offer any help other than to say that the only times I've seen our little guys behave in a similar manner were when they were either having a bout of hypoglycemia when they were very small, or when they were falling asleep standing up.
When Errol was 3 months old, he started wobbling around and walking like that, but it stopped shortly after we gave him some Enercal, and it never happened again.
Fang falls asleep standing up and topples over about once a week, but he's never walking around when that happens.
From your video, it looks like it might be a neurological problem, but I'm no expert. Did your neurologist see these videos when you had the consult with him?
The only other thing I can think of is if he has some sort of balance problem. Do dogs have inner ear balancing systems like people do? Maybe he has some sort of ear infection that's making him dizzy and that's causing him to feel sick and throw up? Again, I have no idea how dogs balancing systems work, so it's just a thought.
Hopefully someone else will chime in with some better advice.
Your pup is really, really cute, btw! |