My chocolate lab puppy is now just over 4 months old and he also have the waves on his back. I had two yellow Labs and not one of them had it. Is is more common in the black and chocolate labs? He is now getting his bigdog coat all over his body just the head still to go. He also scratches allot. He is on Ultra dog food and I also put Revolution on him for fleas. Now he starts to loose a little bit of his puppy fur on his head and it seams like there will is an open spot or two one. Any
I'll have to supply image later but my 5 yo chocolate is not just wavy but super scruffy between the shoulder blades to the point that he gets confused for a chessie continually. However his color is not washed out like a chessies. It started at 3 years of age which coincided with more frequent ocean swimming (3-4 times per week). He's an extremely dark chocolate with golden almost blonde accents from the sun. The sun drying when wet creates interesting color patterns. I suspected it was the water and some of the images here reinforce that hunch. His shoulders look like Baloo's rump only much wavier. I think the effect is more extreme because he has one of the thicker undercoats I've ever seen on a lab and very coarse hair that is nothing like the finer coat on our 1 yo yellow female who at this point has little undercoat at all. I will return with images.
Standard allows for some "feathering" but water effects are not genetic and if it were important would reverse themselves with time away from water but who really cares and who could be so cruel to.deny a lab their water time?
Top of shoulder was wavy but with ocean swimming and harness for skateboarding it never lays flat anymore and looks like he's had a perm... As mentioned above I get asked if he's a Chesapeake a lot, but not from those who know labs. He's got golden blond mixed in with the dark chocolate. I see some other choco-labs with the golden blond and owners confirm it is from the sun but I think it has something to do with drying in the sun when wet.
Kai has a wavy strip going down the middle of her back as well! I get asked if she is a chesapeake a lot.. The other day someone asked me if she was part rhodesian ridgeback because of the wavy area on her back, which I was really surprised by haha. I didn't realize it was so common for other labs to have!