Hello again, Gary and thanks for your very helpful reply.
This poor baby was obviously either born with some genetic defects that are causing his present problems, or he may have been malnourished or abused before you got him. The breeder does not sound very reputable and I would advise you to ask for a refund and return him, but since the breeder's response to all this was 'put him to sleep,' I would not bring hm back there, nor take another kitten from this breeder. I would also consider reporting the breeder to Animal Control, because it sounds like his/her breeding practices are very suspicious and why would she lie about something like him being neutered? Something is not adding up, here.
I would recommend having Yeti seen by a neurological veterinary specialist. Most specialists are found in ER vet centers and Veterinary Colleges. Your description of him having a seizure and seeming to attack himself, may be related to a condition called feline hyperesthesia. This causes the cat to try to bite his back, sides or tail furiously, take off running for no reason and seemingly 'see' things on walls or ceilings that are not there. Also, the skin on his back might ripple or roll for no reason and his back might be super-sensitive. This condition is related to seizures, so that's why I think having him seen by a neurologist and getting a neurological work-up would be a good place to start, if he hasn't been seen by a specialist, yet. Here is more information about this condition:
It's also possible that he may have a brain tumor which is causing the seizures, if they ARE seizures, and this might also be contributing to his one cloudy eye which you think may be going blind.
This poor furry boy may have been born with a hereditary condition which is worsening and if it is diagnosed and treatable, that would be great, but if any vet who has done some full workups on him tells you that he is no longer enjoying quality of life and should be put down (I hope not!), I would return him to the breeder, tell him/her to put him down and ask for a full refund, not only of your purchase price, but also for your vet bills, since she sold you a sick kitten.
I do hope you're able to have him seen by a specialist to get a diagnosis and treatment and I'm praying for your little boy to be well!
I hope this helps you, and please let me know if you have any further questions.
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