There are many types of seizures, partial complex comes to mind, temporal lobe, many are mild and only a trained veterinary healthcare professional would see it.
What you are observing is agitation, anxiety and pica. Looks like he is having a fit of some kind.
There can be many reasons for this, some neurological. Obviously more testing and maybe x-rays will be needed to find the cause. The dog appears to be physically healthy otherwise.
Only a veterinarian that has examined the dog and knows his history can diagnose.
Asking for opinions from nonhealthcare professionals is only going to just add to your confusion. I’d get the testing. Give up cable, eating out…that’s what I did.
