Feline equivalent to Down's Syndrome
Before we were married, my husband had 2 kittens, brothers. I have been around them their whole life, but we did not live together. They seemed very unintelligent as far as knowing their names, the word no, etc. Let me tell you what they look like: Meatball is very fat (hence the name) champagne colored, his tail is short and very thin (yes he looks funny, fat cat small tail), other than the pouch that dangles from his belly, he is beautiful, and still surprisingly active. He is somewhat timid but loves a few people around. Big crowds make him hide. His brother is the one I have the question about. Red is large for a cat. He is not fat in any way, just bigger than normal cats, even Meatball. He is VERY orange and is double pawed in the front with the extra claw between the "thumb" and the rest of his toes. His eyes are very round instead of slightly almond shaped and has only one small white spot on his chest, otherwise entirely orange. He seems addicted to peaople, loves strangers (with one exception at the air port, but that's a different story and completely unchartacteristic of him) and big crowds of people. Where my husband lived with his parents, they had 3 dalmations, also very unintelligent dogs (but we won't go there). While Meatball would slink around them because they hated cats, Red walked freely around them and even wove between their legs while they stared and drooled waiting for Meatball to come down stairs. Now my husband and I live together. Things changed for the better for the boys. They eat better food, their litter gets changed more often, and they get discipline... Let me explain. Instead of being allowed on the counters and table, they are sprayed with water. I treat them like I would my own children (actually, the cats would get treated better still). Meatball now knows his name and comes when I call him, I only have to say his name sternly when he does dare to go on the counter. Red on the other hand doesn't even know I am calling, doesn't acknowledge, when I yell at him, say no, spray him with water, NOTHING! Nothing with the exception that he hates getting sprayed yet will run up to the spray bottle and cuddle it. He brings meaning to the phrase "Beat you like a red-headed step-child" (I would never hit him, but you know what I mean). He doesn't have a meow either. It more of a "brrrrt" sound. Sometimes there will almost be a meow with it, but never a typical meow like Meatball (though Meatball's sounds feminine). So what I am asking is this: Is there a feline equivalent to Down's Syndrome? What's it called? And could Red have it? Also, he loves his new sister, Kichi while Meatball seems afraid of her (Kichi is a tabby).