BLUE EYED CAVALIER KING CHARLIE SPANIEL ORIGIN

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Are you one that likes unique or one of a kind? Then here at Rare Cavalier King Charlie Spaniels we have just the puppy to fit your fantasy!

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We are a geek by nature maybe like some of you, it has been a long-time struggle to produce the blue eyed Cavalier Kings Charlie Spaniels but we always love a good challenge. By understanding the genetics behind the blue eyed Cavalier Kings Charlie Spaniels, we can know hope to reproduce the rarest Cavalier King Charlie Spaniels of all time! 

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The blue eyed Cavalier King Charlie Spaniel origins. There have only been a few single blue eyed Cavalier Kings Charlie Spaniels in the history of the breed and even fewer double blue eyed Cavaliers. Where do the blue eyes come from? Casper's blue eye's was once thought to be a recessive gene. We have recently learned that Casper's blue eye's are a dominate gene. Casper has produced a non merle double blue eyed puppy named Blue Blizzard. The first, is that the blue eye(s) are a result of a recessive gene either a white facial modifying gene or leucitic gene either way its double recessive. The second, is that the blue eye(s) are a result of Heterochromia iridum. The third, is that the blue eye(s) are a result of a merle gene. Thankfully the merle gene can be DNA tested for in the Cavalier King Charlie Spaniel breed.  There really isn’t much information out in the world about the blue eyed Cavalier Kings Charlie Spaniels. There is little DNA testing that can be done in the present-day science to determine the genetic makeup behind the blue-eyed Cavalier. The blue eyed Cavalier Kings Charlie Spaniel will be a mystery until modern science can unravel the blue eyed Cavalier Kings Charlie Spaniels secrets.

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Merle Gene Origins:

 

This study was conducted on the merle gene that was done at Texas A & M, published in the National Academy of Science (PNAS), a highly respected scientific journal. The PNAS paper is entitled: Retrotransposon insertion in SILV is responsible for Merle patterning of the domestic dog. L.A. Clark,J.M.Wahl,C.A. Rees, and K.E Murphy. 2006 January 31; 103(5): 1376-1381

 

This study validated a scientific study of six different breeds with a merle mutation they found the gene to be exactly the same in all the six breeds.  This study concluded that the merle mutation predates all dogs and is behind all breeds—quite possibly going back to their wolf ancestors!

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Bellow is some of the readings from this study.

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"The Dog as a Model

The domestic dog (Canis familiaris) has served as a focal point of scientific curiosity for ages. Originating in East Asia, domestic dogs diverged exclusively from the gray wolf approximately 40,000-15,000 years ago, according to mtDNA evidence (Vila et al., 1997; Leonard et al., 2002; Savolainen et al., 2002). Alternatively, archeological evidence suggests a later domestication event, around 14,000-9,000 years ago (Leonard et al., 2002; Savolainen et al., 2002). To date, there are over 1000 regional varieties and recognized breeds of dog world-wide, the majority of which were created in the past 250 years (Ostrander and Giniger, 1997; Neff and Rine, 2006). This rapid breed differentiation was accomplished using selective inbreeding practices, often from a very small number of founders (Ostrander and Kruglyak, 2000). The desire to breed dogs with specific traits led to a species that is unrivaled among mammals in diversity. Dog breeds differ in size, coat color and texture, craniofacial structure, body conformation, and behavior. Interestingly, the reproductive isolation of dog breeds has created relatively closed gene pools that can be studied as isolated populations (Patterson, 2000; Parker et al., 2004)."

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Based upon this significant research, the Merle gene mutation was present before breeds emerged. This would include the Cavalier King Charlie Spaniel. 

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All this information is from all investigated research and personal experiences. This is not intended for medical advise.