Used to have burmese and as cats do they bred anyhow an apricot we called apricot tot managed to snare a white sealpoint siamese on his first and only shot before being neutered as siamese not of show quality usually are. The result was a large white sealpoint burmese I called white lightening who grew into a big tom he eventually paired with a smoke burmese called flipperty gibbert.
We used to cage the queens when they were ready to litter so oneday white lightening brought a whole rabbit for her so we put it in the cage and she ate it ALL except for a wee fluffy tail and that night she dropped a litter if 8 swwet things of many hues all who sold eventually at $250 ea.
He decided to move out when we decided to keep a new boxer bitch for showwing even though he got along famously with the other dogs he did not like the new bitch.
he hung about the neighbourhood for years adopting the neighbours and called often especially if we had a new queen about. Having been bred with dogs he made mates with all the local dogs and was often seen smooching the local canines which all seemed to like him.
He disappeared eventually but not after upgrading the local genepool to a very large extent.
We had on several occasions local moggie owners complaining about our bloody cat as he showed no discrimination.
Mixing a purebreed Siamese and a purebreed Burmese produces a Tonkinese which is what White Lightening would have been. Tonkinese were frowned upon for many years from the snooty Siamese breeders, however they are a lovely breed. They have the best and worst characteristics of both wonderful breeds.