The question you should be asking yourself is...

"what am I trying to produce?"

Both the Siamese and the Persian are established breeds. You don't want to go around mixing them together. You should be breeding either Persians OR Siamese.

If you want a Birman, breed Birmans.

If you want a Himalayan, breed Himalayans.

By putting a Persian and Siamese together - you get domestics.

And no, you should concentrate on the breed standards first before even thinking of breeding.

Please read my signature and try to understand it...

Thank you for asking the right questions.

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