I got him from a local breeder so we picked him up in the car. I just came back from the vet and she said it could be childhood epilepsy with petit mal seizures or some metabolic issue. I don't know what to think at this stage i'm so worried for the poor pup. i also completely forgot to ask about the liver shunt thing ... we asked the vet again about it being something he ate and she was pretty positive that it wouldn't have been. Fingers crossed it doesn't happen again.