Russian blues not only available in Russia. Where did you find that info (custom)?
Since I read Russian Blues wiki & that leads to Siamese wiki, I learned one of my cat is purebreds Siamese (light blue eyes).
This is my baby cats, grey=wolf,black =smartie n baller the colourful one...

i found them near mamak stall at my house together with their mom,i m so excited so i bought some chicken drumstick n dutchlady milk for them..that time was last year february n they are just few weeks old.me n my friend took the whole family back home n keep them at balcony. we stay at condo n dont have much place for them actually.
That time we didnt realise they are full of fleas n haven't done any vaccination. Finally my body gets all the red beans bite from their fleas and forcing us to clean the whole house nearly whole month and treated them with frontline spray...their mom run away n didnt come back after few weeks we adopted them..
the kittens behave well n we start to make their home as sweet as possible so they wont feel like running away...
we been through alot from buying their foods, keep them free from fleas n playing with them till late nite, they always meow for food n very friendly to anyone that comes to our house.
now they are 1year old n all neutered n vaccinated, behave good n never wanted to go out, just waiting for us to come back n running like crazy to show us their joy...
Till now my house don't have any porcelain and glassware around their playing area either living room or kitchen....
i would like to say that cats are truthly independent without any worries if i left them more than a day during working days or short trip ....
just some quick intro abt my cats that would like to share with u all...n thanks for reading...
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They're definitely handsome! Your "baller" almost like my "Belang" but "Belang" have a little bit white.