I think its nice to make it sound a bit more personal. so something like this
Harley and Quinn are 6 month old female kittens, both are neatered and vaccinated.
Harley says I am a black and white with semi-long fur and I am a bit shy but I do like a nice fuss made of me and once I get to know you I will be a loving cat.
Quinn says I have black short fur I am much shyer than my sister, although I do love to play. I am not quite sure about being touched yet but I am sure I will get round to it if you play with me a lot and are kind and gentle
We must be homed together and cos we scared easy we would not like to live with children.