Whats wrong with my dog?

okay my dog has thyroid cancer and he has seizures, but today hes being wierd

I do agree with everyone else-take him to the vet there might be something else going on. My parents dog had seizures, and after quiet a few they decided it was in her best interest to put her down. Something is going on, isn't right that he is wobbling, believe it or not he's probably clingy cause he doesn't know whats going on and maybe he's trying to tell you it's time! Take him to the vet ASAP!
he came in and hes looking around like he sees something and hes being all clingy, and like wobbly when he walks
take him to vets if he carrys on. it wont be heat stroke and very much doubt it is seizure. is there anything else you can tell me. im a vet nurse you see maybe able to advise
Take him to an emergency vet...NOW!
whats wrong? is it heat stroke? seizure?
vet, vet, vet, VET!!!
TAKE HIM TO THE VET!
I am going to agree with all the other answers, TAKE HIM TO THE VET!!!!!!!
Has your vet checked his eye sight?
Take him to a vet, period. Stop wasting time here.
watch him... it could be early signs of a seizure comming on... humans get the same way when one is about to come on... in a humans case they would just take another pill... if your dog has a prescription trying giving another half a dose
It's probably something to do with a seizure, either the beginnings or the end of it. Take your dog to the vet right away.