"I was warned that he wouldn't live to see six months (if he was lucky) and to not become attached. I told myself that even if he passed away, I gave him all the loving I could."
Despite the grim prognosis Kevin survived. He's never had a seizure - one of the biggest risks for cats with hydrocephalus - shows no signs of nausea, and has what sounds like an extremely contended life.
Tailah has provided him with his own "personal balcony," fitted with cat grass, a "house" and an endless supply of toys.
"He is the happiest, funniest, silliest little kid I know and I'm so glad I was able to give him a chance at life," says Tailah. "A chance he grabbed with both paws and ran with!"
And now he's become internet famous - his Instagram account has more than 11 thousand followers, and his profile has grown hugely since the website Love Meow brought him to the attention of the wider world.
Tailah says: "Four years later and he's still my best little love bug. If you met this little bundle in real life, you would see what we all see. A funny, happy, silly, loving little cat!"