I take Gio every couple of months and after every seizure. The seizures are strong enough that they can put his back out of place, which in turn can cause another seizure. So I take him in within a couple days of a seizure, and every couple of months in between for maintanance.
I've run into a bit of a sticky issue, though. I want to take Romeo in regularly to make sure everything is where it should be now that he is getting more active with agility and I'm really starting to push his heel posture up. There are not any dog-specific chiropractors around here, so I've been taking Gio to a human chiro that does the work after-hours for free. Recently, there has been a stink raised from the vet community about human chiros working on dogs, so none of the human chiros around here are accepting any new patients. The guy that I take Gio to will continue to see his current patients for emergency situations, but is not taking new patients. So I will need to have a chat with him next time Gio goes in to see if Gio and Romeo can count as the "same patient" because they have the same owner.