Showing posts with label genetics. Show all posts
Showing posts with label genetics. Show all posts

Sunday, November 30, 2008

Dane pup’s first rainstorm… and medical update

Princeton looks happy at the park at age 7 months. This is a rare shot of him looking out of his left “ghost eye.”

Our Dane pup Princeton saw rain for the first time this week and went wild. He loved racing around the backyard getting wet and barking at puddles. Then the next morning when it was still raining he watched it from the doorway with a puzzled look, then lay down right next to my feet, not wanting to get wet again.

Princeton was neutered 10 days ago and came through surgery just fine. He’s recovered quickly -- you can’t even see the scar anymore. He weighed in at 94 pounds! And he’s 29 inches at the shoulder. I wonder how that compares to his brothers? He's not 7 months old.

The vet also checked his eyes because he acts like he can’t see as well out of his left (lighter colored) “ghost eye.” The vet turned out the lights and shined a flashlight into each eye. No problem with the right eye, but when she shined it in his left eye he kept squirming to get away, then finally bit her! (Not hard.)That’s not like Princeton! He’s usually very friendly and never bites (except in play). So that side is a lot more sensitive to light, but the vet couldn’t see any differences other than the color of the eye. She said we should see a specialist (ophthalmologist) if we want to pursue it. It seems to be a genetic condition because he's a merle color.

My partner asked the vet how big she thought Princeton would get. She said it was hard for her to estimate because they don’t have any other Great Dane puppies in the practice. Then she added, “There’s probably some other clinic nearby that’s getting all the Great Dane puppies.”

“Every profession has its conspiracy theories,” my partner teased, and we all started laughing.

When I walked Princeton in the weeks leading up the neutering, I kept feeling like he was a stallion prancing and resisting as his handlers try to get him into the starting gate for a race. I wonder if he will still be like that after neutering. Our neighbor’s nickname for him is “Bounce” because he’s so bouncy.

Wednesday, September 17, 2008

Dane inherits unusual spot

Here’s my Princeton at 4 months with his amazing spot...


And here’s the EXACT SAME spot on his great-grandma Penny Moloseum of Moloseum Great Dane Kennel in Poland

My Dane pup Princeton has an unusual spot like a big, long bar on his left side. Because of this unique spot, we nicknamed him “one-banded armadillo” when he was still a small puppy.

I had never seen anything like his single stripe -- until I came across a photo of his great-grandmother Penny on the Moloseum Great Dane Kennel website. My puppy and Penny have the EXACT SAME SPOT on the left side! They both even have the same secondary spot near their spines. Of course, Penny is a Harlequin (black and white only), while Princeton is merle (black, white and grey). Still, the resemblance is uncanny.

See for yourself in the photo, used by permission from Moloseum Great Dane Kennel in Poland. Click here for more photos of Penny. My Princeton is one-quarter Polish through Penny’s son Xander Moloseum.

Princeton was the only pup in his litter with the unusual spot. It does not show up on his mother or grandsire. Princeton is the lucky one who inherited this handsome spot three generations later through the magic of merle and harlequin genetics.

It’s fun to visit the Moloseum website and see lots of cute Dane pups and champions.

Princeton is getting so big that he’s almost like a one-banded dinosaur now.

Wednesday, July 16, 2008

How Princeton got his spots


Princeton and his Harlequin and Merle littermates (courtesy of Shabrea Great Danes)

I wondered how my Great Dane puppy Princeton got his beautiful markings, so I did some research on the genetics of breeding Harlequin Great Danes.

Both of Princeton’s parents are Harlequin (white with black patches), but Princeton and two of this littermates are Merle (grey with black patches). Princeton is also Mantle because he has a white face, neck, chest, belly, legs and tail tip.

Princeton’s breeder said she did not intend for his parents to mate because they are both lightly marked Harlequins, so some of their puppies were likely to be deaf. But love found a way and Lilly and Retro got together anyway. Fortunately all of their puppies were born hearing. In a litter of nine, there were six Harlequins and three Merles. (Seven boys and two girls.)

I was curious about why a breeding of two Harlequins created some Merle puppies, mine included. I discovered that Harlequins come from a combination of two different genes, Merle (spotting) and Harl (removing the grey background). Therefore Merles are a necessary part of Harlequin breeding.

Merles are considered “mismarks” and “pet-quality.” The American Kennel Club does not allow Merles to show or breed in an effort to prevent genetic defects.

Our previous dog was a Harlequin who was adored by strangers. I thought that maybe our new Merle might not get as much adoration from the public because of his “mismark” coloring. Boy, was I wrong! People are fascinated by Princeton’s markings, and he gets tons of compliments on his striking mix of grey, black and white.

For those who are interested in all the complexities of Harlequin Great Dane genetics and coat color, here are two excellent articles:

The Harlequin Family of Dogs: Harls, Merles, Blacks, Whites and More

Inheritance of Great Dane Coat Color by Jane Chopson