Discuss the seizures with your vet and see if the vet wants to put your dog on meds to control them.
Also try keeping a diary about when this happens - for example if it happens monthly when you give your heartworm meds you may want to swap to a different brand and see if that helps.
Same thing with flea meds etc.
You can read about seizures on this site for more ideas
www.canine-epilepsy-guardian-angels.com
You should notify the breeder as this is an inherited disorder. You may find the breeder doesn't care, as most mixbreeders are just making pups for money and don't care about the owners sorrow if the dog gets sick down the road, but just in case its that rare one with a conscience you should notify them and maybe they will stop breeding those two parents that produced this.
Hope this helps you!
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