The Dutch Smoushond (Dutch Smoushond, Hollandse Smoushond or Dutch Ratter) is a small-sized breed of dog descended...
The wide variety of colours we can find in domestic rats is amazing, as we have seen, but behind some of these beautiful and original colours can hide complicated genes that, if misused, can become a danger to our breeding line. These genes are known as: "Lethal genes".
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