Oaki and Kairo were fosters I had several months ago. They came back to me by NO fault of their own. They're from the same litter, about a year old, sweet, gentle, quiet, litter trained, vaccinated against Rabies, and ready to be neutered. Kairo is slightly larger and takes a bit longer to warm up but won't run or hide. He observes what you do while Oaki, the slightly smaller brother, is quicker to explore and greet you. I have their records from the Wisconsin Humane Society vaccine clinic. They were raised together and lived with one other cats as well as an autistic child. These intact boys do not have to be adopted together, but I require them to go home in a pet carrier.