Dumbo & Standard ears
The standard is as its name suggests, the standard ear-term rat is the basic type as well as the agouti. The ears of a standard rat are small and placed high on the head. There are different type of standard ears and some are more popular than others depending on the standard (reference model) of the rat in question:
The dumbo is a spontaneous mutation appeared in Northern California in 1991 in the animal trade. This mutation affects the design of the head of the rat, the head is then enlarged and flattened, the shape and the position of the ears also changes. The ears of a dumbo rats are wider, larger, and placed lower on the head, it is a recessive gene. There are different kind of dumbo ears and some are more popular than others depending on the standard (reference model) of the rat in question:
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Last edited: 12/02/2017