Great news all. My little boy has made (and I quote) 'a miraculous' recovery. His seizures stopped and he came out of his induced coma. The vet is really thrilled with his progress and now they are just monitoring his blood & liver to make sure there's no issues coming up there. A big thank you to the excellent staff at the Vet emergency clinic in Carnegie, Vic.
Unfortunately the snail bait was in my mum's garden when we were visiting with the dogs. 3 key learnings here:
1. Supervise, supervise, supervise
2. You not only have to be vigilant around your own home but also when you take your dogs to other people's homes
3. Take out pet insurance. Seriously.. esp if your dogs are naughty like mine
Thanks to all for your well wishes. I have no doubt all that positive energy helped!!