Yes, they are all mine. All 15 of them... I'm trying to document them all with the D700 but it can be quite difficult to get them all at one time as some of them are camera shy and like some humans would deliberately ruin the shots at the last moment. Also, some of them are not available for 'modelling' at the time I shoot as they are taking their cat-naps like all cats do 18 hrs a day.
After living with for a while, I find that cats have very individual and unique characters... even in the same litter, each sibling has his/her own unique personality. Their personality and character comes through non-verbally in photos in their eyes which I try to capture in my shots.